Bücher von Dharm Nath Kamat

Sugarcane is a second largest agro-industrial crop of India next only to cotton. India is the second largest producer of cane next to Brazil.Variety is an important factor in boosting cane and sugar yield which can easily be adopted by the cane growers. Varieties differ in yield and quality in different environmental conditions. Estimation of phenotypic stability involves regression analysis and has proved to be a valuable technique for assessing the response of various genotypes under changing environmental conditions. Pooled analysis of variance for all the environments are carried and if GXE interaction was found significant, the stability analysis can be carried out using one of the four models viz.(1) Finlay and Wilkinson (1963), (2) Eberhart and Russel (1966), (3) Perkins and Jink (1968)and (4) Freeman and Perkins (1971).These days two frequently used statistical analyses are the additive main effects and multiplicative interaction (AMMI) model and the genotype main effects and genotype × environment interaction effects (GGE) have been used and described in this book in nice way to determine the nature and magnitude of G x E interaction effects on yield and quality of cane.

Varieties play a pivot role in boosting cane yield and sugar recovery. It is the cheapest technology on which farmers rely and can afford easily. These variety have varied degree of stress tolerance against biotic as well as abiotic stress conditions. In Bihar, during grand growth phases there is waterlogging condition in about 35-40 % area which also coincides with high temperature to favour insect pests and diseases. As such, there is a need to identify high yielding, moderate to high sugar containing clones of sugarcane tolerant to waterlogging to cater the need of cane growers and sugar factories of Bihar. To enhance the productivity of this crop in Bihar, there is need to identify such type of sugarcane variety/clone which have ability to tolerate waterlogging condition.