My Durian Best Of The World: 04/19/14

A cultivar is a plant or group of plants selected for desirable characteristics that can be maintained by propagation.

Most cultivars have arisen in cultivation but a few are special selections from the wild. The word cultivar is generally assumed to be a contraction of the words cultigen and variety, which seems more appropriate than cultivated and variety.

A durian cultivar is essentially the equivalent of the botanical variety that has been deliberately selected for desirable characteristics such as fruit shape, size, smell, color, texture, taste and tree characteristics.

A durian clone is a descendant of a selected durian cultivar which is produced by vegetative reproduction, usually bud-grafting or inarching.

Note: (from Wikipedia)

Plant variety is a legal term, following the International Union for the Protection of New Varieties of Plants (UPOV) Convention. Recognition of a cultivated plant (a cultivar) as a "variety" in this particular sense provides its breeder with some legal protection, so-called plant breeders' rights, depending to some extent on the internal legislation of the UPOV signatory countries, such as the Plant Variety Protection Act in the US.

N.B.

In the ASEAN region, only Singapore and Viet Nam are members of UPOV.

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Special Note For Malaysia

In Malaysia, Plant Variety Protection System is implemented under Protection of New Plant Varieties Malaysia Act 2004 (PNPV Act 2004). The Act is gazetted on 1 July 2004 and came into operation since 20 October 2008.

"Plant Breeders' Rights also called Plant Variety Protection (PVP), is a form of Intellectual Property Rights (IPRs). It is an exclusive right granted to breeders of new varieties to exploit their varieties and has features that are in common with patents for industrial inventions. Both forms of protection grant to their holders a form of exclusive right to pursue innovative activity.

The PNPV Act is a pan-Malaysian by nature, which is applicable to all plants but excludes microorganisms. IPR protection of new variety is granted via a registration process based on validation of plant characteristics that distinguishes it from other varieties.

The Department of Agriculture (DOA) has been registering fruit clones since the early 1930's and was officially as to be the National Registrar of Varieties in 1994 by the Ministry of Agriculture. The responsibility in implementing the PNPV Act 2004 has been entrusted to the DOA Malaysia."

In Malaysia durian cultivars registered with the Department of Agriculture since 1993 are included in

Varieties Registered For National Listing (Non-Protected Varieties).

The popular D24 has an I.D. 152 and the Raja Kunyit or Musang King (D197) is listed under I.D. 150.

Since August 2012, three new durian cultivars (2 from Batu Bahat, Johor and 1 from Penang) have been submitted for registration under the new PVP act.

More information at Plant Variety Protection Malaysia website

http://pvpbkkt.doa.gov.my/

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Durians of different shapes, sizes and colour

The uninitiated will tell you that all durians look and smell the same. But to durian lovers, each durian is unique. No two fruits are alike. It is not uncommon to find subtle differences even among durian fruits coming from the same tree.

Since the durian is open-pollinated, it shows many differences in fruit shape, size, smell, color, texture and taste. And these differences have contributed much to the fun and excitement durian lovers enjoy about the durian’s appeal and mystique. It's a never-ending adventure to discover new variations of flavor, aroma, appearance, and texture found in the many durian cultivars, and from one fruit to the next. Durian lovers have their differences too. Some prefer the strong aroma and bitter durians, others prefer the milder aroma and sweeter ones..

For hundreds of years, durian-loving fruit hunters and farmers from different regions of South East Asia (where the durian originated) had diligently selected chance seeding of durian for specific desirable characteristics that they like. It was only during the early 1930's that local scientists and durian growers began collecting and evaluating the many different durian cultivars in an attempt to select high quality durian based mainly on the fruit characteristics prefer by consumers and tree characteristics prefer by commercial durian growers.

Desirable cultivars are given coded numbers and local names. The local names usually reflect some distinctive characteristics of the cultivars, names of the durian owners or the places where the durian come from.

Durian bud-graft

Selected durian cultivars are then reproduced vegetatively by bud-grafting onto seedlings of selected root-stocks that are tolerant to diseases and drought. These superior quality durian clones are then grown on research or private farms and manage on a commercial scale.

Some durian cultivars or clones are of very good quality which are fervently sought and savoured with great passion by durian lovers who do not mind paying fantastic prices for these delicious fruits. On the other hand, the poor quality durian clones are generally the ones which give the durian the infamous "smelly", "stinky", "rotten meat", "rotten cheese", "sour milk", "old gym shoes" labels.

Malaysia

The Malaysian Department of Agriculture began registration of local durian clones since 1934 and currently 199 clones have been officially registered. The popular Musang King was registered as D197 in 1993. The latest official entries are D198 (Kim Hong) and D199 (Bola 828) registered in March 2013 with DOA Malaysia. Both varieties are from Batu Pahat, Johor.

Recommended Cultivars or Varieties For Commercial Planting

Three durian cultivars or clones D24, D99 (Gob kecil), D123 (Chanee) are officially recommended for commercial planting in their respective agroclimatic zones. These 3 clones are in Class I and have undergone extensive performance evaluation for at least 10 fruiting seasons.

Cultivar D24 and Agroclimatic Zones

Cultivar D99 and Agroclimatic Zones

Cultivar D123 and Agroclimatic Zones

Another 4 cultivars or clones D145 (Beserah), D158 (Gan Yau), D159 (Monthong), and D169 (Tok Litok) have interim recommendation for commercial planting in certain areas only. They are in Class II and have also undergone extensive performance evaluation for at least 5 fruiting seasons. They have the potential to be upgraded to Class I.

D145 (Beserah) is suitable for planting in the District of Kuantan, Pahang.

D158 (Gan Yau) and D159 (Monthong) are suitable for commercial planting in the Kuala Muda District in Kedah.

D169 (Tok Litok) is recommended for commercial planting in the Tanah Merah District in Kelantan

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The Malaysian Department of Agriculture has published a descriptors list of 13 durian varieties which have been registered with the department. It's in Bahasa Malaysia and you can get a free copy HERE.

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The Malaysian Agricultural and Research Development Institute (MARDI) has released 3 hybrids durian clones which are high-yielding, of superior quality, early fruiting (5 to 6 years) and also show moderate to good tolerance to Phytophthora patch canker disease.

MDUR78 (registered as D188) and MDUR79 (registered as D189 ) were released in September 1991 and MDUR88 (registered as D190) was released in June 1992. Although these 3 hybrids clones are not officially recommended by the Department of Agriculture for commercial planting, they have undergone extensive evaluation by MARDI and can be considered as good quality commercial clones.

Recommended durian clones of Malaysia

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Besides planting the commercial clones recommended by the Department of Agriculture and MARDI, many durian farmers also planted their preferred clones which are NOT officially recommended.

In Penang, popular clones planted are D163 (Hor Lor), D164 (Ang Bak), and D175 (Ang Hea).

In Perak, D120 (Manong or KK5), D146 (Lempur Mas), D148 (Durian Paduka) and D150 (Empang Mas).

In Selangor, D160 (Buluh Bawah), D162 (Tawa) and Penu (MDUR 505).

In Johore, D168 (Mas Hajah Hasnah).

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Some of the recommended as well as popular durian cultivars or clones are described below:

Clone No: D 2
Local Name: Dato Nina
Date Registered: 1934
Origin (Owner/Place): Melaka
Remarks: A medium -large, erect tree which flowers well but yields poorly. It exhibits good tolerance to Phytophthora stem canker. Its average fruit size is about 1.3-1.8 kg. The fruit is mostly deformed, kidney-shaped, lopsided with small sharp spines and difficult to open despite its thin wall. Its aril is thick, bronze- yellow, firm and of excellent taste. Its deformed shape means only a few locules are present and each has 1-2 arils.

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Clone No: D 24
Local Name: sometimes referred to as "Sultan" by Singaporeans
Date Registered: 1937
Origin (Owner/Place): Bukit Merah, Perak
Remarks: Most popular clone. The tree is large with a broad, pyramidal canopy. It flowers regularly and bears 100-150 fruits/tree/year. Each fruit is about 1-2 kg, ellipsoid to oval shape with thick, light green rind and 1-4 arils/locule. The flesh is yellow, thick, firm, smooth, sweet and nutty with a slightly bitter taste. Unfortunately, it is extremely susceptible to Phytophthora and also exhibits physiological uneven pulp ripening.

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Clone No: D 98
Local Name: Katoi
Date Registered:
Origin (Owner/Place): Introduced from Thailand
Remarks: Large fruit with thick white pulp. Average flesh quality. Use as pollinater clone.

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Clone No: D 99
Local Name: Kop Kecil or Gob
Date Registered: 17.6.1970
Origin (Owner/Place): Thailand
Remarks: A medium-sized tree, low branching with loose canopy and it exhibits biennial bearing. A 10-15 years old tree produces 100-130 fruits/season. This variety crops early and is tolerant to Phytophthora as well as to dry environment. This variety is a good pollinizer clone for other varieties. Fruits are usually bell-shaped to lychee shaped sometimes round with a slight depression at the apical end, lobed with distinct grooves delineating the locules. Average fruit weighs 1-1.5 kg, yellowish-brown, light green with densely packed, long spines which are recurved at the tip. The fruit peduncle is medium length and thick. The rind is uniformly thin and easily split open exposing the very thick, creamy , sweet, nutty, firm and golden-yellow flesh. The aroma is pleasant. There are usually 2 -3 large arils/locule.

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Clone No: D 114
Local Name: Kampun
Date Registered:
Origin (Owner/Place): Kuala Kangsar, Perak, Malaysia. Probably introduced from Thailand
Remarks: Use as pollinater clone.

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Clone No: D 123
Local Name: Chanee
Date Registered: 14.7.1971
Origin (Owner/Place): Pertab Singh, Rim Nursery, Sg. Buluh, Selangor
Remarks: Thai origin. Big and elongated, brownish-green fruit with moderately thick rind and rough spines, brown at the tips. Peduncle short and thick. The flesh is creamy, firm, sweet, golden-yellow with a strong aroma.

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Clone No: D 145
Local Name: Tuan Mek Hijau or Beserah
Date Registered: 30.10.1981
Origin (Owner/Place): En. Khidzir Engku Ali; Beserah, Pahang
Remarks: It ripens green and produces moderately large, 1.3-1.5 kg, round to oval fruits. It bears less frequently but yields a good crop. The fruit rind is moderately thick and encloses 1-4 arils/locule in a single row. The flesh is thick, bright yellow, fine-textured, sweet and nutty with a good aroma. This clone is susceptible to Phytophthora.

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Clone No: D 146
Local Name: Lumpur Mas or Golden Mud
Date Registered: 2.4.1985
Origin (Owner/Place): Kg. Ulu Lumpur, Kuala Kangsar, Perak
Remarks: It won the top prize at the Perak State Durian Competition in Taiping in 1983. The fruit weighs 1-3 kg, ellipsoid in shape and dark green. The aril is large with yellowish, sweet and delicious flesh.

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Clone No: D 148
Local Name: Paduka
Date Registered: 2.4.1985
Origin (Owner/Place): Kg. Gajah, Perak
Remarks: Winner in the Durian State Competition held in Perak in 1985. The fruit is moderately large, round with delicate spines. The sweet yellow flesh is of moderate quality.

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Clone No: D 150
Local Name: Emping Mas
Date Registered: 2.4.1985
Origin (Owner/Place): Bukit Sempeneh, Batu Kurau, Perak
Remarks: Won second prize in the 1985 Perak Durian competition held at Kg. Gajah. The fruit is elongated, tapering at the apical end and brownish green, with a moderately long, 9 cm peduncle. The aril is thick and large with fine-textured, yellow flesh.

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Clone No: D 158
Local Name: Kan Yau or Gaan Yaow or Tangkai Panjang
Date Registered: 30.6.1987
Origin (Owner/Place): Hj. Omar Hj. Bin, Kg. Raja, Guar Cempedak, Kedah
Remarks: It produces round or globose, brownish -yellow fruit with moderately thick rind and sharp, straight, dense spines. There are 3 large arils/locule. The flesh is thick, creamy, firm, sweet, golden-yellow with a pleasant aroma which is not strong.

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Clone No: D 159
Local Name: Bantal Mas or Golden Pillow or Monthong
Date Registered: 30.6.1987
Origin (Owner/Place): Hj. Ahmad Yaakob, Bukit Besar, Kota Sarang, Semut, Kedah
Remarks: This clone was introduced from Thailand and bears very large, elongated, oval fruit with a tapering sharp apex, weighing 4-6 kg,. The large, yellow aril is sweet and of excellent quality.

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Clone No: D 160
Local Name: Buluh Bawa; also commonly called Teka
Date Registered: 30.6.1987
Origin (Owner/Place): Lim Hai Chua, Banting, Selangor
Remarks: The fruit is large, 3 kg, oval to ellipsoid, green and rough, with short, widely spaced spines. The thin rind can be easily opened. The large aril has thick, firm, brownish-yellow, creamy sweet flesh of excellent quality.

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Clone No: D 162
Local Name: Tawa
Date Registered: 30.6.1987
Origin (Owner/Place): Lim Hai Chua, Banting, Selangor
Remarks: The fruit is medium large, elongated, and yellowish-green. The aril is medium large with firm, yellow-white pulp of excellent bitter but creamy sweet taste.

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Clone No: D 163
Local Name: Horlor or Labu
Date Registered: 30.6.1987
Origin (Owner/Place): Chat Fatt Hin, Balik Pulau, Penang
Remarks: Won overall winner prize in the durian competition in Balik Pulau in 1987. The fruit is oval, cylindrical, medium size fruit with a thick rinds and short peduncle. The spines are closely spaced and of medium length. There are 2-3 arils/locule. The arils are moderately thick, yellow coloured and the flesh is smooth, creamy sweet and of excellent quality.

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Clone No: D 164
Local Name: Ang Bak or Red Flesh or Isi Merah
Date Registered: 30.6.1987
Origin (Owner/Place): Teoh Eng Eng, Balik Pulau, Penang
Remarks: It won the third prize in the durian competition at Balik Pulau in 1987. It bears medium size, elongated to ellipsoid fruit with medium length, sharp, conical, densely spaced spines; medium thick rind and short peduncle. The pulp is moderately thick, orange yellow, fine textured, creamy sweet and of excellent quality.

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Clone No: D 165
Local Name: Cheh Chee or Green Fruit
Date Registered: 30.6.1987
Origin (Owner/Place): Lee Toh Sem, Balik Pulau, Penang
Remarks: It produces medium size fruit, ellipsoid to round with large, long, densely spaced spines. The large aril has cream coloured, medium thick, smooth, creamy, excellent quality flesh.

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Clone No: D 166
Local Name: Balik Pulau 604
Date Registered: 30.6.1987
Origin (Owner/Place): Lee Toh Sem, Balik Pulau, Penang
Remarks: The fruit is medium large, oval, green with large, short, sharp and widely spaced spines. The aril is moderately thick and the flesh is yellow, sweet and of good quality. The tree yields well.

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Clone No: D 168
Local Name: Mas Hajah Hasmah or Mas Muar or Muar Gold
Date Registered: 24.5.1989
Origin (Owner/Place): Hjh. Hasmah Hj. Hashim. Muar, Johore
Remarks: The tree is moderately large and bears frequently with high yields. The fruit is round, weighs 1.4-1.6 kg, brownish green with a short peduncle. The fruit is easily open exposing 3-4 moderately large arils per locule. The pulp is orange yellow, firm, sweet and creamy. Some of the seeds are small and shrunken.

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Clone No: D 169
Local Name: Tok Litok
Date Registered: May 1989
Origin (Owner/Place): Wee Chong Beng, Tanah, Kelantan
Remarks: The fruit is fairly large 1.5-3 kg, ellipsoid, yellowish-green with sharp, long spines. The flesh is thick, yellow with a slight bitterness.

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Clone No: D 175
Local Name: Udang Merah or Red Prawn
Date Registered: 4.6.1990
Origin (Owner/Place): Penang
Remarks: The fruit is fairly large (1.5-3 kg) elongate-ellipsoid with brown green rind and small spines. The flesh is creamy sweet, thick, soft, fine and yellow.

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Clone No: D 188
Local Name: MDUR 78
Date Registered: 30.8.1991
Origin (Owner/Place): MARDI
Remarks: A hybrid of D 10 (female) X D 24 (male). A small but high yielding tree which is comparatively resistant to Phytophthora stem canker. It bears ellipsoid, yellowish light green, 1.5-1.8 kg fruit. The flesh is thick with orange-yellow, fine textured, sweet, creamy and nutty flesh. The fruit has a shelf-life of 70 hr.

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Clone No: D 189
Local Name: MDUR 79
Date Registered: 30.8.1991
Origin (Owner/Place): MARDI
Remarks: A hybrid of the reciprocal cross of D 24 (female) X D 10 (male). A small tree which fruits regularly but produces average yields. It is resistant to Phytophthora stem canker. It bears oval, ellipsoidal dark green fruit that weighs 1 -1.6 kg. The aril is thick and large with orange yellow, fine textured, creamy, sweet and nutty flesh. The fruit is easily open and has a short storage life of 27 hr.

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Clone No: D 190
Local Name: MDUR 88
Date Registered: 1.7.1992
Origin (Owner/Place): MARDI
Remarks: This is also the reciprocal hybrid of D 24 (female) X D 10 (male). The tree is medium large, high yielding and a consistent bearer. At 7 yrs 2 fruiting season/year have been observed. It produces oval to ellipsoid, light green or yellowish green fruit with short peduncle, straight, sharp, pyramidal, quite closely spaced spines. Each fruit averages1.5- 2 kg. The pulp is thick, golden-yellow, dry, sweet and nutty. There are on the average 3-4 arils/locule ie. with 15-20 arils per fruit. This variety has a long storage life of 78-86 hr.

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Clone No: D 197
Local Name: Raja Kunyit or Musang King or Mau Shan Wang or Cat Mountain King
Date Registered: 9.12.1993
Origin (Owner/Place): Wee Chong Beng, Tanah Merah, Kelantan
Remarks: Fruit shape is oval to ellipsoid and has a light green husk. It has a thick, golden yellow flesh, very smooth with little or no fibres. Sticky and creamy texture. Sweet and bitter taste. Mau Shan Wang is the most popular variety at present. Price S$13-15/kg. It is very interesting to note that the word "musang" here does not referred to the civet cat but rather to the region "Gua Musang" where this clone was first planted and became very popular among the farmers there.

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Thai Clones or Cultivars

Most of the information on Thai clones or cultivars are reported in Thai and is scanty. There are more than 200 cultivars of which about 60-80 clones are commercially cultivated. They are generally divided into 3 group according to maturity indices:

Early maturity (103-105 days) - Chanee, Gradum-tong and Lueng
Medium maturity (127-130 days) - Monthong. Gob, Kan Yau, and
Late maturity (140-150 days) - Gumpan, Enak, Tong-yoi-chat.

Of all the cultivated durian areas in Thailand, Monthong comprises 41%, Chanee 33%, Kan Yau 5%, Gradum-tong 2% and the rest are minor clones.

Monthong

The most important and famous durian cultivar of Thailand. It means "golden Pillow" in Thai. It produces large, elongated, oval-cylindrical fruits tapering at the stylar end. The large fruit has a pronounced beak, lobed, yellowish-brown each weighing about 2-6 kg. The peduncle is thick and moderately long and the rind is thick and covered with sharp, pointed, small, conical, densely packed spines. Each fruit has 10-15 arils and many small, shrunken (aborted) seeds. Each locule has usually 3 large, thick, creamy, smooth, pale yellow arils. The pulp has mild odour and of excellent quality, constituting more than 30% edible portion and has little physiological disorders.

This cultivar is very good for processing into preserved frozen pulps. It bears fruit after 8 years of planting. Its poor fruit characters include the coarse-texture flesh, the high fibre and the flesh exhibit non-uniform ripening. It is susceptible to Phytophthora.

Chanee

"Chanee" means gibbon in Thai and belongs to the Luang cultivar group. This is an early variety which bears fruit 4-6 years after planting. The fruit is 2-4.5kg, oval to broad cylindrical, lobed and greyish brown. The peduncle is thick and moderately long, and the rind is brownish yellow, thin with blunt, large, widely spaced spines. Each locule has 3-4 arils. The bright yellow pulp is thick, fine textured, firm, creamy smooth, sweet and of excellent taste. The flesh exhibits uniform ripening. The inferior qualities include high flesh fibre, frequent physiological disorder, watery at full ripening stage, poor fruit setting and is susceptible to phytophthora and fruit borer.

Kan Yau or Gaan Yaow

"Gaan Yaow" or "Kan Yau" means long stalk in Thai. The fruit is characterized by a long, thick peduncle of 10-14cm. The fruit is lychee-shaped to globose, greyish-brown, rough with a moderately thick rind bearing short, sharp, straight, moderately dense spines. There are 3-4 large, thick arils per locule. The pulp is golden-yellow, smooth, creamy, sweet with a pleasant aroma. This cultivar has little fruit physiological disorder, low flesh fibre and good fruit setting characteristics. Each fruit weighs 2-4.5kg. The inferior fruit characters include the large seed and the high number of seeds/fruit. high incidence of wet core, branch dieback, low phytophthora resistance and poor processing properties.

Gradumtung

"Gradumtung" or "Kradumtung" means golden button in Thai. This cultivar bears fruit 4-6 years after planting and is also an early season variety in Thailand., fruiting around March. The fruit is large 2-4kg oval and symmetrically or uniformly distinctly lobed. The rind is brownish-green, thin and bears short, sharp densely packed spines. The fruit peduncle is moderately long . There are 3-4 large, thick arils/locule with yellow flesh.

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Bioversity International has published a booklet on "Descriptors for Durian" and you can get a free copy HERE..