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Assessment of wheat genotypes based on culm reserves contribution to grain yield

Creator: Islam, M.A.
Creator: Hossain, M.A.
Creator: Atikuzzamman, M.
Creator: Islam, M.S.
Creator: Razzak, M.A.
Creator: Sathi, M.A.
Year: 2018
Language: English
Publisher: IJOART
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
Type: Article
Country focus: Bangladesh
Place of Publication: India
Pages: 1-6
Issue: 6
Volume: 7
Keywords: Culm Reserves
Keywords: Grain Filling
Keywords: Water Soluble Carbohydrates
Description: To study the genotypic variation in terms of culm reserves to yield attributes and grain yield in wheat, twelve cultivars were used as experiment materials. Ten tillers were sampled once a week during grain filling period to determine the changes in dry weights of different parts to examine the contribution of culm reserves to yield. The results in the experiment revealed that the grain yield varied from 261 to 535 g m−2 with the mean of 419 g m−2. The higher grain yield is attributable to increased contribution of carbon assimilation measured as the changes in total dry mass and /or remobilized culm reserves. Generally, high yielding cultivars showed higher total dry mass accumulation compared to low yielding ones. They also exhibited almost unchanged leaf greenness for longer period during grain filling that indicate more contribution of current assimilation in the high yielding cultivars. Moreover, high yielders also showed higher WSCs contents in culm at milk ripe stage. Culm WSCs contents at milk ripe and maturity varied from 83 to 603 and 4 to 151 mg culm−1, respectively among the cultivars. The amount of remobilized culm WSCs varied from 26 to 556 mg culm−1. In general, contribution of culm WSCs to grain yield is higher in high yielders than in low yielders. The contribution ranged from 2 to 29% of total grain weight. In conclusion, higher contribution of both current assimilation and culm reserves results in higher grain yield of wheat grown in Bangladesh.
Agrovoc: STEMS
ISSN: 2278-7763
Journal: International Journal of Advancements in Research & Technology

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  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

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