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Accueil du site → Doctorat → Egypte → Genetical and physiological behavior for the tolerance of water stress in cotton (gossypium barbadense l.)

Mansoura University (2018)

Genetical and physiological behavior for the tolerance of water stress in cotton (gossypium barbadense l.)

El-Shazly, Mohab Wagdy Mohamed.

Titre : Genetical and physiological behavior for the tolerance of water stress in cotton (gossypium barbadense l.)

Auteur : El-Shazly, Mohab Wagdy Mohamed.

Etablissement de soutenance : Mansoura University

Grade : Doctor of Philosophy (PhD) in Agricultural Sciences 2018

Descriptif
The purpose of the present study were to : 1- Identify physiological and biochemical traits related to the tolerance of water deficits that could distinguish sensitive and tolerant cotton plant genotypes 2- Study the effect of water stress on cotton yield and fiber quality. 3- Detection and estimation of general and specific combining ability under water stress condition to isolate superior parents and cross combination for tolerance water deficit which are characterized by bearing water deficit to be used in various breeding programs. 4- Study the genetic behavior of some physiological and morphological as well as fiber quality characteristics under water stress conditions. 5- Detect the magnitude of genetic divergence among parental cotton genotypes and their F1s cross combinations to select most suitable combinations for tolerant water deficient. 6- Construct of some selection procedures to enhance selection of superior families in early segregating generations. Experimental design and laboratory procedures :- 1- First experiment : Line x Tester mating design. Thirteen cotton parents were crossed, in such away Line x Tester (9x4) mating design by using four Testers i.e. Dandra, Pima S6, Australy and 10229 and nine Lines i.e. Giza 45, Minufy, Giza 67, Giza 68, Giza 86, Giza 77, Giza 94, Giza 96 and Giza 69, in 2014 crop season. In 2015 season the 36 F1 hybrids and their parents were grown in a randomized complete block (RCB) design with three replicates under water stress and non-stress conditions. 2- Second experiment :-

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