Status of Khesari [Lathyrus sativus of Bangladesh] breeding and future strategy
1989
Rahman, M.M. | Quader, M. | Kumar, J.
Two hundred and sixty seven local and exotic lines have been evaluated for their performance and neurotoxin content since 1980. Three of these khesari lines Jamalpur, Pahartali and Charbadna were found to be high yielding. Line 3968 was relatively low in neurotoxin content, early in maturity and low in seed yield. Hybridization among high yielding and low- neurotoxin lines has been attempted since 1984/85. These and some other populations from the Indian Agricultural Research Institute (IARI), New Delhi, are in F(2) to F(6) generations. A three-location test for the N-oxalyl aminoalamine (BOAA) content of 13 lines showed significant effects for cultivars, environments, and their interaction. The mean toxin content for the lines grown at Ishurdi was lower than that at either Joydebpur or at Jessore. Attempts to establish association of various characters with low toxin content showed low or no correlation. It is suggested that the single-seed descent (SSD) method of breeding may be followed. Screening for BOAA content may be done of F(5)-F(7) generations only to select individual progenies. In future, attempts will be made to collect more germplasm, to make more crosses, to screen breeding populations for major diseases of this crop, and to develop cultivars suitable for seed and fodder production.
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