Nutrient Use and Uptake Efficiency in Wheat and Triticale Genotypes under Low and Optimum Input Conditions

N, P and Zn content, harvest index and grain yield were used to evaluate diverse 32 wheat and triticale genotypes categorized in four groups i.e. Triticum aestivum, Triticum durum, synthetic wheat and triticale genotypes. The genotypes differed significantly for all the characters indicating considerable variation for improvement of these traits. The varieties LoK1 and HD2687 were having highest grain yield under low and optimum input conditions respectively, while HD 2687 showed maximum percent of increase over low input conditions. PBW343 and P7307 were having highest harvest index under low and optimum input conditions respectively, whereas Syn5 was found to show highest percent of increase over low input conditions. As nutrient use and uptake parameters are concerned, for N content triticale genotypes TL2963 and TL2967 showed highest content under low and optimum input conditions, while percent increase over low input conditions was found to be highest in HD2687 (285.96 per cent). Genotypes TL2966 and Syn36 were having highest P content under low and optimum input conditions respectively among all the four groups, while TL2969 responded better over low input conditions. Among all the four groups triticale genotype TL2963 showed trend having high content of zinc under both low and optimum input conditions, whether for percent of increase over low input conditions P7531 responded better. Path coefficient analysis revealed that harvest index followed by biological yield had the direct effect under both conditions.

Keywords:

Nutrient use efficiency, wheat and triticale, N, P Zn content in wheat,

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