Partitioning of dry matter accumulation in aestivum and durum wheats under irrigated and non irrigated field conditions. Short communication.
1987
Kumar A. | Singh D.P. | Yadav S.K.
Three varieties of wheat (Triticum aestivum L., cvs, WH 147, P 1200, Triticum durum desf.cv. DWL 5023) were grown on sandy loam soil with two irrigation treatments (i) no post sowing irrigation, (ii) six post sowing irrigation, at Haryana Agricultural University Farm, Hisar, India. The pattern of dry matter accumulation in leaf, stem and reproductive organs were recorded at bi-weekly intervals starting from fifteen days after seeding (DAS) through maturity. Leaf weight increased from initial vegetative phase till 75 DAS and stem weight up to 105 DAS and these declined thereafter till maturity irrespective of genotypes and environments. The pattern of preanthesis and postanthesis contribution of assimilates to grain yield differed markedly between durum and aestivum wheats. The preanthesis contribution to grain yield increased with the moisture stress. The preanthesis contributions to grain yield was markedly higher in cv WH 147 under nonirrigated condition as compared to P 1200 and DWL 5023.
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