Inheritance of Grain Filling Duration in Spring Wheat (Triticum aestivum L. em Thell)
2007
Kamaluddin (Banaras Hindu University, Varanasi, India), E-mail: [email protected] | Muni Singh, Rishi (Banaras Hindu University, Varanasi, India) | Zainul Abdin, Malik (Hamdard University, New Delhi, India) | Ali Khan, Mather (Hamdard University, New Delhi, India) | Alam, Tanweer (Hamdard University, New Delhi, India) | Khan, Salim (Hamdard University, New Delhi, India) | Chand Prasad, Lal (Banaras Hindu University, Varanasi, India) | Kumar Joshi, Arun (Banaras Hindu University, Varanasi, India)
To understand the genetic control of grain filling duration (GFD), i.e., the number of days from anthesis to physiological maturity, we studied the F₁, F₂, BC₁ and BC₂ generations of six spring wheat crosses from nine varieties/genotypes. Generation mean analysis for gene effects indicated that one or more types of epistasis were significant in all crosses. In each pairing, the F₁ and F₂ means were either intermediate or closer to the mean of the parent having the longer GFD. Our narrow-sense heritability estimate was reasonably high, at 47.67 (based on diallel analysis).
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