Varieties

Varieties
  • Varieties differ in colour of rind and flesh, size of tubers, colour of stem, leaf and petiole, branching pattern, duration of crop and resistance to mosaic disease.
  • High amount of cross-pollination results in heterozygous nature.
  • Most of the crop improvement works on cassava are done at the Central Tuber Crops Research Institute (CTCRI), Thiruvananthapuram.

Important varieties developed at CTCRI are listed here

H-97

  • Erect branching hybrid, developed by crossing Manjavella Local with a Brazilian Local, is characterized by the light sepia colour of emerging leaf with brown tubers
  • Yield 25-35 t/ha in 10 months.

H-165

  • This is a non-branching hybrid with mature leaves showing drooping nature
  • Tubers are relatively short with cream coloured rind
  • Yield 33-38 t/ha in 8-9 months.

H-226

  • This semi-branching hybrid having characteristic green coloured leaves
  • Tuber rind is light purple and skin is cream with purple patches
  • Susceptible to cassava mosaic disease (CMD)
  • Yield 30-35 t/ha in 10 months.

Sree Sahya

  • This is a multiple hybrid involving five parents.
  • It is non-branching with dark brown petiole and spiny prominent stipular mark
  • Tubers are long and rind is cream coloured; yield 35-40t/ha in 10-11 months.

Sree Vaisakham

  • This is a semi-branching hybrid with slightly yellow fleshed tubers which remains yellow even after cooking
  • Carotene content is 466 IU / 100 g
  • Tuber rind is cream and skin is brown coloured
  • Yield is 35-38 t/ha in 10 months.

Sree Prakash

  • This is a short, non-branching, early maturing (7-8 months) variety developed by clonal selection
  • Highly tolerant to Cercospora leaf spot; yield 35-40 t/ha in 7-8 months.

Sree Harsha

  • This is a triploid clone developed by crossing a diploid with an induced tetraploid clone of ‘Sree Sahya’
  • Plants are stout, erect and non-branching with tubers of good cooking quality and high starch content (38-41%)
  • Yield 35-40 t/ha in 7-8 months.

Sree Jaya

  • This is a short-duration (6 months) clonal selection suitable for low land cultivation as a rotation crop in paddy-based inter-cropping system
  • Tubers are with brown skin and purple rind and have good cooking quality
  • Yield 26-30 t/ha
  • Susceptible to CMD.

Sree Vijaya

  • This is also a short-duration (6-7 months) clonal selection suitable for low land cultivated as a rotation crop in a paddy-based inter-cropping system
  • Tubers are with cream coloured rind and light yellow flesh due to high carotene
  • Susceptible to mite and scale insect
  • Yield 25-28 t/ha in 7 months.

M-4

  • This is a non-branching variety with excellent cooking quality
  • Susceptible to mites
  • Yield 18-23 t/ha in 10 months.

Sree Rekha

  • Erect branching variety with excellent cooking quality
  • Susceptible to mites; yield 18-23 t/ha in 10 months.

Sree Prabha

  • Semi-spreading variety with good taste and quality
  • Yield 35-40 t/ha in 10 months.

Three varieties viz., Nidhi, Kalpaka and Vellayani Hraswa were developed by Kerala Agricultural University.

Nidhi

  • Yield (25.1 t/ha)
  • Tolerant to mosaic
  • Short duration (5-6 months) grayish white stem
  • Petiole white with red shade
  • Skin light pink.

Kalpaka (KMC-1)

  • Yield (28.4 t/ha), short duration (6 months)
  • Non branching stem, pink tuber rind.

Vellayani Hraswa

  • High yield (44.01 t/ha)
  • Short duration (5-6 months)
  • Pink tuber rind
  • Excellent cooking quality.

Tamil Nadu Agricultural University also developed three varieties viz., CO-1, CO-2 and CO-3.

CO-1

  • A clonal selection with tubers having whitish brown skin, creamy rind and 35% starch; yield 30 t/ha in 8-9 months.

CO-2

  • A branching variety with tubers having brown skin, creamy white rind and 34.6% starch; yield 35 t/ha in 8-9 months; suitable for consumption and industry.

CO-3

  • A branching variety having tubers with brown skin and 35.6% starch; yield 42.6 t/ha in 8 months.

CO 4

  • Selection from Me501,Yield 50 t/h,Starch 40 %,Field tolerant to Red spider mite and scales

CTCRI CO 5

  • Seedling selection from MNga, Released during 2007. Yield potential 30 t/ha, Starch content 26%, Resistant to CMD, suitable to irrigated conditions.

Last modified: Tuesday, 8 November 2011, 8:49 AM