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 |
The genetic nature of character association for various traits was studied in Rabi sorghum using F2 populations derived from four crosses of M 35-1 with specialty varieties viz., AKJ-1 (flaking), KMJ -1 (popping), and SMJ-1 & RSJ-1 (hurda purpose). These varieties derived from landraces are recommended for cultivation in Northern Dry Zone of Karnataka. Grain yield per plant and fodder yield per plant were significantly and positively correlated with all the yield components studied plant height, panicle length, panicle breadth, panicle weight and 100 seed weight in the crosses M 35-1 x AKJ-1 and M 35-1 x KMJ-1. Positive and significant association was observed among these yield components in these crosses. Where as in the cross M 35-1 x RSJ-1 the association of grain yield per plant with all the above yield parameters was non-significant and in M 35-1 x SMJ-1 the association was significant only with plant height and panicle length. Days to 50% flowering was significantly negatively correlated with all the yield components in all the crosses except in the cross M 35-1 x KMJ-1. 100 seed weight was significantly positively associated with all other yield parameters in all the crosses except M 35-1 x KMJ-1 with non-significant and negative association with panicle length. In this cross, seed size in terms of 100 seed weight was significantly negatively correlated with popping expansion ratio and panicle length was positively correlated with popping quality traits studied viz., popping yield, popping expansion ratio and flake size. The results indicate the scope for isolating desirable segregants with high yield and earliness in the cross M 35-1 x AKJ-1. Where as in the cross M 35-1 x KMJ-1, panicle length can be used as indirect selection criteria for isolating desirable segregants. KMJ-1 was characterized by significantly higher panicle length compared to all other parents used in the study.
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