小穗数与可育小花数的多少由其分化速度决定。
The numbers of spikelets and fertile florets were controlled by the rate of differentiation.
而增加每穗粒数则应主要从增加结实小穗数着手；
The grains per spike should be raised mainly through the increase of fertile spikelets.
种群内变异幅度最大和最小的分别为节间长和小穗数。
The variation extent of internode length is the Maximum in population, while that of spikelet number is the minimum.
单位面积小穗数是决定最终产量最重要的产量构成因素。
The number of panicles per unit area was the most important yield components in determining final yield.
穗粒数和有效小穗数不能作为小麦抗条锈病的鉴定指标。
Grains per spike and available spike lets per spike ratio cannot take the wheat anti - strip rust the identification Indexes.
奥尔森矮源近等基因系对回交父本的小穗数没有影响，对旗叶长影响比较小；
The near isogenic lines with Oleson did not affect the spikelet numbers and flag leaf length of backcrossing male parents.
变异系数较小，即改良潜力小的性状为株高、穗长、主穗小穗数、有效小穗数。
The traits with low CV value are plant height, ear length, number of spikelets, available spikelets which had low improvement potential.
不同水分条件下，植株稳产性主要受单株穗数、有效小穗数及穗下节长的影响；
Under different water regimes, spike number per plant (SNP), effective spikelet per spike (ESPS) and peduncle length (PLE) contribute a lot to the stable grain yield.
性状相关分析表明，随着抽穗期缩短，穗粒数和千粒重增加，但小穗数有减少的趋势。
Correlation analysis of characters indicates that shortening heading date can cause the increase in grains number per spike and 1000-grain weight, but decreases in spikelet per spike.
四个水稻籽粒产量构成因素为单位面积穗数、小穗数、成熟籽粒百分数和成熟籽粒重量。
Four components contribute to rice grain yield including the panicles per unit area, the number of spikelets, the percentage of, and the weight of ripe grains.
水稻小穗着粒密度是一个重要的农艺性状，其与单株穗数、小穗数和粒重等有密切的联系。
Spikelet density is an important trait related with panicle number, spikelet number and grain weight.
在不同对的近等基因系之间，抽穗期、开花期、株高、穗长和结实小穗数等五个性状有极显著的差异。
There were highly significant differences in heading date, flowering date, plant height and number of seed-setting spikelets per head among different pairs of isogenic lines.
缺硼严重影响小麦的穗分化，在一定施硼范围内，随着硼施用量的增加，总小穗数和有效小穗数增多。
The application rates of boron greatly affected the spike differentiation of wheat. In a certain range, gross spikelets and available spikelets increased with the increasing rate of boron applied.
结果表明，羊草孕穗以后的各生长发育时期，补给水肥对其穗长、小穗数、小花数和千粒重均有不良影响。
The results showed that ear length, the number of the spikelets and the florets, and the 1000-seed weight were badly influenced by watering and fertilizing in different periods after the boot stage.
本研究认为，多小穗数和多穗粒数是圆锥小麦地方品种最突出的优良性状，可做为小麦育种的重要基因资源。
In conclusion, more spikelets and kernels per spike were the most valuable traits in turgidum landraces, and could be utilized in wheat breeding.
结果表明，穗长和小穗数的遗传均符合加性—显性遗传模型，基因作用以加性效应为主，显性程度为部分显性。
The result indicated that heredity of spike length and number of spikelets was in accord with addictive-dominance model, and the addictive effect was mainly in gene effect with part dominance.
适当降低株高、增加有效小穗数、提高结实率、穗粒数与千粒质量并重、主攻穗粒质量是提高小麦产量的有效途径。
Output can be improved by reducing the plant height, improving available spikelet and seed setting rate and combining kernel number per spike with thousand kernel weight.
增施锌硅肥对小麦有显著的减少小穗退化、降低空秕率作用，达到增加每穗粒数、提高产量的目的。
Spike degeneration and sterile grain rate can be decreased by increasing Zn and Si fertilizer, and the number of grains per ear and grain yield can be increased.
去除基部小穗对结实粒数和粒重的影响较小，穗粒数和粒重下降较少；
The effect of removing base spikelet on setting kernels and grain weight was slighter, kernels and grain weight per ear decreased less.
去除基部小穗对结实粒数和粒重的影响较小，穗粒数和粒重下降较少；
The effect of removing base spikelet on setting kernels and grain weight was slighter, kernels and grain weight per ear decreased less.
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