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首页> 外文期刊>Cereal Chemistry >Genetic Gains in Agronomic and Selected End-Use Quality Traits over a Century of Plant Breeding of Canada Western Red Spring Wheat
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Genetic Gains in Agronomic and Selected End-Use Quality Traits over a Century of Plant Breeding of Canada Western Red Spring Wheat

机译：加拿大西部红春小麦一个世纪植物育种的农艺学和部分最终用途质量性状的遗传增益

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摘要

Canadian Western Red Spring (CWRS) market class is the predominant type of wheat (Triticum aestivum L.) grown in Canada since the turn of the 20th century. Wheat cultivars ranging from cv. Red Fife to cv. Superb were field tested in a series of 24 replicated trials spanning 19 years in central Saskatchewan, Canada. The objective of this study was to measure the rate of cultivar improvement in light of relatively narrow end-use quality definitions for the CWRS market class. Regression of cultivar trait means on year of cultivar registration was used to assess the rate of change in yield, productivity traits, and end-use quality parameters. Yield levels were estimated to be increasing at a rate of approximately 15 kg/ha per year in 1970 and 23 kg/ha per year in 1995. Days to spike emergence and plant height decreased over time. Kernel weight, grain protein concentration, SDS sedimentation volume, farinograph absorption, and dough development time increased over time, whereas farinograph mixing tolerance index and yellow pigment concentration decreased. The results show that improvement in key agronomic and end-use traits has been achieved in CWRS wheat.
机译：自20世纪初以来，加拿大西部红春（CWRS）市场类别是加拿大种植的主要小麦（Triticum aestivum L.）。小麦品种从简历。红色横笛到简历。在加拿大萨斯喀彻温省中部，经过19年的一系列24项重复试验，对Superb进行了现场测试。这项研究的目的是根据CWRS市场类别相对狭窄的最终用途质量定义来衡量品种改良的速度。品种特征平均数的回归是根据品种注册年份来评估产量，生产率特征和最终使用质量参数的变化率。估计1970年单产水平以每年约15公斤/公顷的速度增长，1995年以每年23公斤/公顷的速度增长。穗期出现的天数和株高随着时间的推移而减少。籽粒重量，籽粒蛋白质浓度，SDS沉降量，粉质仪吸收量和面团发育时间随时间增加，而粉质仪混合耐受指数和黄色颜料浓度降低。结果表明，在CWRS小麦中，关键农艺和最终用途性状已得到改善。

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