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首页> 外文期刊>Plant Production Science >Effects of the Tillering Nodes on the Main Stem of a Chinese Large-Panicle-Type Rice Cultivar, Yangdao 4, on the Growth and Yield-Related Characteristics in Relation to Cropping Season
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Effects of the Tillering Nodes on the Main Stem of a Chinese Large-Panicle-Type Rice Cultivar, Yangdao 4, on the Growth and Yield-Related Characteristics in Relation to Cropping Season

机译：分Large节对中国大稻型水稻品种扬稻4号主茎的生长和产量相关性状的影响

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摘要

Using a Chinese large-panicle-type high-yielding indica rice cultivar, Yangdao 4 (YD), pot experiments were carried out to determine the effects of the removal of the lower nodal primary tillers on the growth and yield-related characteristics in comparison with a Japanese cultivar, Hinohikari (HH), with almost the same growth duration. The plants with all tillers remaining (Cont), those with tillers from the 5th and higher nodes (T5) and those with tillers from the 8th and higher nodes (T8) were prepared by removing the other tillers and grown in early, normal and late cropping seasons, sowing in late April, May and June, respectively. The lowest nodal primary tillers in each group emerged earlier and the number of days from sowing to flag leaf expansion and to full heading stage was reduced in the late cropping season, especially in HH. The maximum number of stems and number of panicles were larger in HH than in YD, and tended to be higher in the order of Cont>T5>T8 plants. The average panicle weight per stem was higher in YD than in HH and higher in the order T8>T5>Cont. Panicle weight per hill was higher in YD than in HH in each cropping season and higher in early cropping season in both cultivars. Panicle weight decreased with delayed tiller emergence in YD, but not in HH. Panicle weight was more closely related to straw weight in YD than in HH. Therefore, the promotion of vegetative growth by early sowing and development of lower nodal tillers is more effective for attaining a high yield in YD than in HH.
机译：使用中国大穗型高产in稻品种扬稻4（YD），与盆栽试验进行了比较，以确定移栽下节叶主要分till对生长和产量相关特性的影响。日本品种，Hinohikari（HH），生长时间几乎相同。通过移走其他分ers来准备剩下的所有分ers（Cont），第5个及以上节的分till（T5）和第8个及以上节的分till的植物（T8），并在早期，正常和后期生长播种季节，分别在4月下旬，5月和6月播种。每组中最低的节点主要分till出现较早，在播种后期，尤其是在HH，从播种到旗叶扩展到抽穗期的天数减少。 HH的最大茎数和穗数比YD大，且按Cont> T5> T8的顺序增加。 YD中每个茎的平均穗重高于HH，并且按T8> T5> Cont的顺序更高。在两个作物品种中，YD的单穗穗重都比HH高，而在早季则更高。延穗分Y出现时，穗重下降，但在红H中没有。与HH相比，YD中的穗重与稻草重量更紧密相关。因此，通过早期播种和低节间分development的发育来促进营养生长比YH更为有效。

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