National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
To study inheritance pattern of threshability, two non-free threshing varieties of dicoccum viz., DDK-1025 and DDK-1029 crossed with advanced free threshable line NIDW-295. The non-segregating (P1, P2 and F1) and segregating (F2, BC1P1 and BC1P2) were developed and evaluated on individual plant basis for the trait threshability. The chi-square method was followed in order to test goodness of fit and establish gene relationship. Inheritance pattern of free threshability found to be governed by single dominant gene and free threshability is dominant over non-free threshability in F1 ¬in both the crosses viz., DDK-1025 x NIDW-295 and DDK 1029 x NIDW-295. In the F2 generations of both the crosses, observations displayed a good fit to the monogenic ratio of 3:1 for free threshability verses non-free threshability. Among the back cross generations, BC1P1 (F1 X DDK 1025 or DDK 1029) generations of both crosses, the data was found to be in good fit with expected ratio of 1:1 for free threshable : non-free threshable. In case of BC1P2 (F1 x NIDW-295), all the plants observed for free threshability fall under free threshable category, which was in conformity with expected free threshable to non-free threshable ratio of 1:0.
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