Effect of Weathering During Delayed Harvest on Test Weight, Seed Size, and Grain Hardness of Wheat
Year: 1986
Type: article
Abstract: Five cultivars of wheat (Triticum aestivum L.) were evaluated for effects of weathering by subjecting windrowed grain to varying periods of exposure in a 2-yr study. Moderate amounts of precipitation caused a significant reduction (5%) in test weight affecting density and packing efficiency about equally. Cultivars differed in test weight loss with Neepawa showing the largest reduction of 2.9 and 4.2 kg hL−1 in successive years. Cultivars also differed in susceptibility to bleaching, the primary cause of grade loss. The 1000-kernel weights decreased significantly (1.4%) in only 1 yr. Grain hardness decreased approximately 8% with delayed harvest at similar rates for all cultivars. The hard-grained Glenlea and RL4137 were the most resistant to test weight loss and bleaching, indicating that selection for improvement might be possible.Key words: Harvest delay, weathering, wheat, test weight, seed size, grain hardness
DOI: 10.4141/cjps86-065
Authors: E. CZARNECKI, L. E. EVANS
Institutions: Agriculture and Agri-Food Canada, University of Manitoba
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2146881836