Genetic Yield Potential Improvement of Semidwarf Winter Wheat in the Great Plains
Genetic Yield Potential Improvement of Semidwarf Winter Wheat in the Great Plains
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DOI：
10.2135/cropsci2012.03.0158
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发表时间：
2013-05-01
期刊：
影响因子：
2.3
通讯作者：
Raun, William R.
中科院分区：
文献类型：
--
作者：
Battenfield, Sarah D.;Klatt, Arthur R.;Raun, William R.
最近，私营公司和公共实体对他们的小麦(Triticum aestivum L.)进行了大量投资和改良。繁育计划。由于这种兴趣的增加，需要对通过传统植物育种进行的小麦遗传改良进行分析。许多研究指出，从高大品种到半矮品种的产量都有显著的提高，但还没有研究记录从最早的半矮品种到现在的品种的改良。测试了30个品种，包括2个Tall(哈尔科夫，1919年和凯旋，1964年)和28个半矮秆品种，时间跨度从1971年(101)到2008年(大奖和401)。2010年和2011年，在俄克拉荷马州、堪萨斯州和德克萨斯州的11个地点对栽培品种进行了化肥和杀菌剂试验，以充分保护疾病。随着时间的推移，为了产量稳定而进行的育种工作有所增加。包括高大品种在内的所有地点的产量都显着增加了14.607 kg ha(-1)年产量或0.93%的哈尔科夫产量。当仅限于半矮秆品种时(1971-2008年)，产量增长减少到11.03 kg ha(-1)年，或101(1971)产量的0.40%。没有发现收益率平台期的证据。
Recently, private companies and public entities have made significant investments in and improvements to their wheat (Triticum aestivum L.) breeding programs. Because of this increased interest, genetic improvements made in wheat through traditional plant breeding need to be analyzed. Many studies noted the significant yield improvement from tall cultivars to semidwarf cultivars, but no studies have documented improvements made from the earliest semidwarfs to present-day cultivars. Thirty cultivars were tested including two tall (Kharkof, released in 1919, and Triumph 64, released in 1964) and 28 semidwarf cultivars spanning the period from 1971 (TAM 101) to 2008 (Jackpot and TAM 401). Cultivars were tested in 2010 and 2011 at 11 locations across Oklahoma, Kansas, and Texas with fertilizer and fungicide for adequate disease protection. Increases in breeding for yield stability have been made over time. A significant yield increase of 14.607 kg ha(-1) yr(-1) or 0.93% per year of Kharkof yield was obtained across all locations with the tall cultivars included. When gain was restricted to only semidwarf cultivars (1971 to 2008), yield gain was reduced to 11.03 kg ha(-1) yr(-1) or 0.40% per year of TAM 101 (1971) yield. No evidence of a yield plateau was found.