Hybridization and selection
  • Tapioca being propagated vegetatively, breeding programme is more time consuming due to its long production period.
  • Induction of flowering in sparingly flowering varieties is a problem.
  • It can be done by increasing day length, since long day condition favours induction of more flowering.
  • Foliar application of IAA, NAA and Ascorbic acid at 50 ppm is also recommended to increase the intensity of flowering.
     

Varieties

Pedigree

Yield
(t/ha)

Duration
(days)

Starch
(%)

Year of release

H.97

Manjavella x Brazillian seedling selection

25.30

290-310

29

1971

H.165

Chadyamangalam vella x clone similar to Kalikalan

33-38

240-260

25

1971

H.226

Ethakkakaruppan x M4

30-35

290-310

29

1971

Sree Visakham (H.2304)

Multiple hybrid involving 5 parents, viz., Acc. 468 Ac. No.174.S.1310 (Madagascar) Ac.No.82 & M4

35-40

300-320

31

1977

Sree Prakash (S-856)

Selection from local accessions

35-40

220-240

29

1987


Last modified: Monday, 30 January 2012, 8:58 PM