随着颖花分化数的增加，颖花退化数有显著的增加。
With the increment of differentiated spikelets, the retrograded spikelets increased significantly.
结果表明，维管束数目与一、二次枝梗数及颖花数有密切关系。
The results showed that: the number of primary branches, secondary branches, and spikelets were closely associated with the number of vascular bundle.
叶面积下降速率与颖花的充实粒率及籽粒充实度呈负相关关系。
The rate of green leaf area decrease was negatively related to increase the well grain-filling grain percentage (PGP) and grain filling degree (GF).
穗角性状以主基因遗传为主；每穗颖花数性状以多基因遗传为主。
Panicle Angle was mainly governed by major gene, while number of spikelets per panicle was by polygenes.
抽穗期的穗重及茎秆重量与每穗颖花数关系密切，均表现为随重量增加而增加。
The fresh weight of panicle and stem at the heading stage was correlated positively to spikelet number per panicle;
不闭颖的颖花，颖内湿度低，籽粒含水量少，果皮受光老化，因而米粒发育不良。
The grains did not' develop well. because the flowers could not close in time. the humidity in them was lower. the water content of the seeds was less and coats were ageing by light.
随着品种演进产量逐步提高，其原因主要是每穗粒数的增多导致总颖花量的增加。
Increase in grain yield was attributed mainly to the increase in total number of spikelets, which resulted mainly from a large panicle.
穗肥能够增加颖花数和防止颖花退化，为适时安全抽穗和提高结实率、粒重打好基础。
Panicle fertilizer can increase spikelets and prevent spikelet retrogression and lay a foundation for heading safely and increasing kernel setting and kernel weight.
水稻颖花分化分为三个阶段，分别可用积温的直线函数、负指数函数和直线进行函数模拟。
The third stages are the line, the negative exponential and line function of the GDD.
FM3突变体植株在生殖生长过程中不能分化出正常小穗，其颖花内的雌蕊和雄蕊明显退化。
FM3 mutant could not produce normal caropses, but could develop abnormal caropses with degenerated pistil and stamens .
以不同类型水稻品种为材料，分析了稻穗颖花开花日序对籽粒胚乳细胞数和米质形成的影响。
Using different rice cultivars as materials, effect of flowering sequence on endosperm cells (ECs) and grain quality was analyzed.
光温因子主要通过单位面积有效穗数、每穗粒数和单位面积颖花量的作用而影响超级稻产量；
The light and temperature factors greatly affect yield mainly by the productive panicle number, spikelets per panicle and spikelet's per unit area.
总体上，每穗颖花数与每穗二次枝梗数、每个二次枝梗上的颖花数、颖花密度有更大的相关性。
Generally, spikelets per panicle were more closely correlated with number of secondary branch per panicle, spikelets in secondary branch per secondary branch, and spikelet density.
获得高产的原因主要是在适宜的株行距配置和插植苗数下，单位面积上获得了较高的群体颖花量。
The main reason resulting in higher yield was that the higher number of total spikelet increased per unit area under the condition of appropriate seedling Numbers, plant spacing and row spacing.
本文研究了水稻幼穗在无菌培养和添加外源激素作用下，由颖花直接培养成植株的全部发育过程。
It deals with the developmental process through which the spikelets in the young panicles regenerated plants under the condition of sterile culture and the effect of hormone added.
分析了穗长、枝梗分布、枝梗颖花数及其结实率、穗部维管束数目和开花期单茎干物重对穗粒数的影响。
The effects of the panicle length, branch distribution, number of spikelets, seed set percentage, neck vascular bundles and plant weight per stem on spikelet number per panicle were analyzed.
在同一季节抽穗开花的主穗和分蘖穗之间，其颖花内的多卵频率不存在明显差异，多胚苗频率的差异也不明显。
However, there was no difference in the frequency between the main_panicles and the tilling_panicles of heading at the same season.
在花药培养技术上，通过49个组合400个幼穗1200个颖花的研究，提出了依据植株和颖花形态判断花粉发育时期的具体指标；
Through the study of 1200 flowers of 400 young ear of 49 combinations, a concrete index judging the period of the pollen development according to the shape of plant and flowers was put forward;
在花药培养技术上，通过49个组合400个幼穗1200个颖花的研究，提出了依据植株和颖花形态判断花粉发育时期的具体指标；
Through the study of 1200 flowers of 400 young ear of 49 combinations, a concrete index judging the period of the pollen development according to the shape of plant and flowers was put forward;
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