Comparisons among cultivars of wheat, hulled and hulless oats: Effects of N fertilization on growth and yield
Comparisons among cultivars of wheat, hulled and hulless oats: Effects of N fertilization on growth and yield
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DOI：
10.1139/cjps2011-167
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发表时间：
2012-11
影响因子：
1.2
通讯作者：
B. Ma;D. Biswas;Q. Zhou;C. Ren
中科院分区：
文献类型：
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作者：
B. Ma;D. Biswas;Q. Zhou;C. Ren
妈，B。L.，比斯瓦斯山K.，周，加-地P.和Ren，C. Z. 2012.小麦、有壳燕麦和无壳燕麦品种间的比较：氮肥对生长和产量的影响。可以的.植物科学杂志92：1213-1222。关于裸燕麦和有壳燕麦对氮素施肥对作物生长和产量影响的比较研究较少。在安大略省渥太华进行了为期3年的田间研究，以评估当前小麦（Triticum aestivum）、有壳燕麦和无壳燕麦品种在3种氮素肥力水平下的生长和籽粒产量。平均在3年，无论是中等和高（75和150公斤氮公顷-1）N治疗表现出统计学上相似，但较高，叶面积指数（LAI）和总干物质（TDM）比0 N治疗，无论作物类型。在最终收获时，随着氮供应的增加，2006年，去壳燕麦Gosling和小麦品种AC Brio的TDM与去壳燕麦瓦奥-2相似且更高，而2008年，两个燕麦品种的籽粒产量远低于小麦（P<0.01），主要是由于燕麦品种的早期倒伏。总的来说，小麦品种AC Brio产生最大的籽粒产量和最高的收获指数（HI），其次是脱壳高斯林;无壳燕麦具有最低的籽粒产量和最低的HI。与小麦品种相比，有壳燕麦和无壳燕麦的籽粒产量较低，这是由于其HI较低（P<0.05），倒伏较重（尤其是倒伏发生较早时），且开花期LAI较高。我们的研究结果表明，提高HI和抗作物倒伏的主要目标是在加拿大东部的带壳和无壳燕麦品种的改进。
Ma, B. L., Biswas, D. K., Zhou, Q. P. and Ren, C. Z. 2012. Comparisons among cultivars of wheat, hulled and hulless oats: Effects of N fertilization on growth and yield. Can. J. Plant Sci. 92: 1213-1222. There is limited comparative research on the responses of crop growth and yield to N fertilization in hulless (Avena nuda) and hulled (Avena sativa) oats. A field study was conducted for 3 yr at Ottawa, ON, to assess the growth and grain yield of current wheat (Triticum aestivum), hulled and hulless oat cultivars with three N fertility levels. Averaged across the 3 yr, both the mid and high (75 and 150 kg N ha-1) N treatments demonstrated statistically similar, but higher, leaf area index (LAI) and total dry matter (TDM) than the 0 N treatment, regardless of crop types. At final harvest, with increasing N supply, both hulled oat Gosling and wheat cultivar AC Brio had similar and higher TDM than the hulless oat VAO-2 in 2006, whereas both oat cultivars produced much lower (P<0.01) grain yield than wheat in 2008, primarily due to early lodging of the oat cultivars. Overall, the wheat cultivar AC Brio produced the greatest grain yield with the highest harvest index (HI), followed by hulled Gosling; the hulless oat had the lowest grain yield and the lowest HI. Compared with the wheat cultivar, the lower grain yield of both hulled and hulless oats was attributed to a lower (P<0.05) HI and more severe crop lodging (especially when lodging occurred early), coupled with a higher LAI at flowering. Our results suggest that enhancing HI and resistance to crop lodging are the primary targets for both the hulled and hulless oat cultivar improvement in eastern Canada.