American cotton [Gossypium hirsutum (L.)] grown in India belongs to the race Latifolium. It is prone to bollworms [Helicoverpa armigera (Hubner), Erias vitella (Fabricius), Pectinophora gossypiella (Saunders)] infestation which causes considerable crop loss. Two breeding lines ÔBikaneri (BN)-arboreum (ARB)-16Õ and ÔBN-tomentosum (TOM)-277Õ are cytoplasmic diverse genetic stocks. They were developed by crossing experimental lines ÔDelta Branch Experiment Station (DES)-ARB16Õ and ÔDES-TOM277Õ (non-recurrent parents) with G. hirsutum ÔBNÕ (recurrent parent). Compared with BN these stocks possessed higher amount of gossypol, flavonol and phenol contents in leaves, stem and square. Plants were tolerant to bollworms and inherited comparable agronomic properties (yield, boll weight, plant height, number of monopods and sympods and fibre quality). Cotton breeders can use these lines for breeding cotton resistant to bollworm.
The multiple plant traits associated with drought were assessed in 21 genotypes of cluster bean including check RGC-936 for their contribution to rainfed adaptation of the genotypes. All the assessed traits showed significantly different genotypic responses under rainfed conditions. Clusterbean genotypes showed wide range of variability for most of the characters and all the traits exhibited broad spectrum of ranges during both years. Total sugar content, specific leaf area at 30 and 45 DAS, number of branches plant-1, number of clusters plant-1, number of pods cluster-1 and seed yield plant-1 showed high genotypic (Vg) and phenotypic (Vp) variances. The high estimates of heritability coupled with high values of genetic advance over mean (GAM) were observed for the characters such as total sugar content, specific leaf area at 45 DAS, clusters plant-1 and seed yield plant-1 indicates predominance of additive component for these traits and hence direct selection would be more effective in improving these traits. Correlation study revealed that number of clusters plant-1 (0.81**, 0.84**), number of pods cluster-1 (0.69**, 0.86**), pod dry weight (0.99**, 0.67**) showed positive significant correlation with seed yield plant-1 during both the years which indicates strong association of these characters with seed yield plant-1. On the basis of above findings, it can be concluded that the characters like, number of clusters plant-1, number of pods cluster-1, showed positive significant correlation with seed yield plant-1. Thus, these traits may be considered as effective parameters of selection to increase seed yield of clusterbean under rainfed situation of Jaisalmer.
The present investigation entitled "Studies on genetic divergence (D 2 ) for fruit yield and its contributing traits in okra [Abelmoschus esculentus L. Moench]", was conducted during Kharif 2019. The experiment comprised of thirty genotypes at Main Experimental Station,
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