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- W2081843439 abstract "Improvements in agronomic practices and cultivars have allowed for expanded production of winter wheat ( Triticum aestivum L.) on the Canadian prairies. In this study, yield and yield components were measured in dry land and irrigation trials to identify the factors determining yield potential and sample uniformity. Although genotype × environment interactions were important contributors to variation in the yield determining factors, genotype and position of the kernel in the spike had the major influence on kernel weight. Large differences in kernels spikelet −1 and kernel weight indicated that these two variables were responsible for yield adjustments to stress during the spikelet and kernel development phase. Kernels from the lower and middle section of the spike and the proximal (A and B) floret positions were heavier than those from the upper spike section and the distal (C and D) floret positions. Artificially reducing spikelet numbers increased weight of the remaining kernels but only under dry land conditions. Weight of kernels in the C position was increased 22% when ovules of the proximal florets were removed during head initiation. These observations indicate that because growing season moisture availability is extremely variable on the Canadian prairies, an ability to compensate for limitations or excesses in sink size as the season progresses must be bred into cultivars if grain yield is to be maximized. This means that successful genotypes tend to have higher than average values for all yield components rather than one exceptionally high component and uniform seed size is difficult to achieve." @default.
- W2081843439 created "2016-06-24" @default.
- W2081843439 creator A5070287202 @default.
- W2081843439 creator A5081789944 @default.
- W2081843439 date "2006-07-01" @default.
- W2081843439 modified "2023-09-27" @default.
- W2081843439 title "Yield Structure and Kernel Potential of Winter Wheat on the Canadian Prairies" @default.
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- W2081843439 doi "https://doi.org/10.2135/cropsci2005.06-0126" @default.
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