Indian Journal of Plant Genetic Resources
Year : 1997, Volume : 10, Issue : 1
First page : ( 49) Last page : ( 62)
Print ISSN : 0971-8184.

Variability, character associations and selection of parents in genetically diverse populations of sugarcane under conditions of North Western Zone

Ram Bakshi, Shanker Kripa

Sugarcane Breeding Institute, Regional Centre, Post Box No. 52, Karnal 132 001 (Haryana).

Abstract

With an objective to identify new donors for different characters from genetically diverse material involving various Saccharum species, forty hybrids each during 1990–91 (set-I), 1991–92 (set-II) and 1992–93 (set-III) cropping seasons were evaluated. Correlations among stalk yield and its components showed that number of millable stalks (NMS) and stalk length were positively associated with stalk yield in all three sets whereas with sugar yield, stalk yield in all three sets and quality traits in set-II and set-III were positively associated. Path analysis revealed the importance of NMS in all three sets, stalk length in set-II and single stalk weight (SSW) in set-III for increasing stalk yield. For sugar yield, NMS in set-I, brix and CCS per cent in set-II, sucrose per cent and SSW in set-III would prove reliable. Twenty six elite clones combining stalk yield and juice quality attributes were identified. Apart from these, donors for seven individual traits of yield and quality and red rot resistance were also identified. Utilization of selected clones in combination with proven parents/commercial hybrids is suggested.

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Keywords

Variability, correlation and path analyses, selection, interspecific hybrids, Sacchqrum spp..

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