Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Genetics of yield and its component traits in crosses of exotic and indigenous lines of barley Hordeum vulgare L under moisture stress

Auteur : Hanumant,Madakemohekar Anant

Université de soutenance : Banaras Hindu University

Grade : Doctor of Philosophy (PhD) 2016

Préface
The present investigation entitled “Genetics of yield and its component traits in crosses of exotic and indigenous lines of barley (Hordeum vulgare L.) under moisture stress” comprises of two parts. First part deals with the study on nature and magnitude of gene action controlling the inheritance of drought tolerance of yield and drought related characters under both rainfed and irrigated conditions and the best general and specific combiners for drought tolerance. Second part describes the selections of the high yielding drought tolerant transgressive segregants using different drought parameters.

Chapter wise presentation of the thesis is as follows :
Chapter 1 It gives the glimpse of the subject on which research was carried out. It provides a general background and an overview of the current situation of barley production in the country and worldwide. This chapter justifies the purpose for choosing this research topic, the yield losses due to drought, importance of barley as model crop to study drought tolerance/resistance, its genetic parameters, breeding techniques and objectives of the research work.
Chapter 2 embodies the review of literatures covering various aspects of heterosis, combining ability (GCA and SCA) and inheritance of drought tolerance components falling under the scope of the present study.
Chapter 3 includes the materials and methods employed for carrying the research work and the details of treatments. The statistical analysis used in the present study has also been mentioned in this chapter.
Chapter 4 The experimental findings are presented in this chapter which includes the analysis of variance, general and specific combining ability effects of yield, its component and drought related traits, components of genetic variance and extent of heterosis obtained for these traits, the estimates of the gene actions through generation mean analysis, isolation of transgressive segregants and drought tolerant recombinants in F2 generation.
Chapter 5 Results obtained have been discussed and interpreted in the light of research work done in India as well as abroad.
Chapter 6 A brief description of the achievements obtained in the present investigation is given and conclusions drawn from this study were presented with the hope that it will provide scope for further research and their application in management and developing cultivars for drought tolerance in barley, it also included promising transgressive segregants isolated under moisture stress and non-stress condition.
Lastly References includes the list of references in alphabetical order which has been consulted during the course of investigation and cited in the text.

Présentation et version intégrale (Shodhganga)