Effect of Terminal Water Stress on Phenological, Morpho-Physiological, and Yield and Its Attributing Traits of Bread Wheat Genotypes | Chapter 7 | Current Topics in Agricultural Sciences Vol. 4

 From December 2014 to April 2015, a field experiment with 50 bread genotypes was conducted at the Agriculture and Forestry University's Rampur research farm to determine the morpho-physiological traits, grain yield, and attributing traits in advanced lines and commercial varieties of bread wheat linked to drought tolerance. Under irrigated and drought conditions, the field experiment was conducted in an alpha lattice design with two replications. All genotypes differed considerably in both circumstances and growth conditions, according to the results of a combined analysis of variance and mean comparisons. When compared to irrigated settings, mean values of all morpho-physiological yield and its contributing factors showed that genotypes performed worse under drought stress. The genotype WK 2507 yielded the greatest (2.4 tons/ha) under drought stress, while the genotype WK 2513 yielded the least (0.095 tons/ha). The genotype WK 2437 yielded the greatest (2.94 tons/ha) in irrigated conditions, while the genotype WK 2523 yielded the least (0.272 tons/ha). In both dry and irrigated situations, however, genotypes WK 2525, WK 2507, Munal#1, and WK 2437 outperformed others in terms of grain output. For drought circumstances, WK 2507, WK 2503, and WK 2524 were promising lines. Grain yield has a substantial positive link with thousand-grain weight, according to correlation studies conducted under dry conditions. Under both dry and irrigated conditions, it exhibits a substantial negative connection with days to heading and flag leaf senescence.

Author(S) Details

Anil Poudel
Agriculture and Forestry University, Rampur, Chitwan, Nepal.

Surya Kant Ghimire
Agriculture and Forestry University, Rampur, Chitwan, Nepal.

Barun Dev Achraya
Agriculture and Forestry University, Rampur, Chitwan, Nepal.

Bishnu Raj Ojha
Agriculture and Forestry University, Rampur, Chitwan, Nepal.

Dhruba Bahadur Thapa
Agribotany Divisions, Wheat Breeding Unit, NARC, Kathmandu, Nepal.

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