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粒叶比是衡量源库关系是否协调的一种数量化表示方法,被作为筛选高产品种的综合指标。本文主要从生长发育时期、叶面积和茎蘖等的生长变化动态、衰老期间冠层叶片的生理特性、叶绿素含量和光合强度等方面对高粒叶比小麦群体进行了综述,分析了高粒叶比小麦群体的光合特性以及干物质积累的分配动态,认为粒叶比高的群体,其经济系数较高,具有较高的增产潜力。
Grain-leaf ratio is a quantitative measure of whether the source-storey relationship is harmonious and is used as a comprehensive index for screening high-yielding varieties. In this paper, we mainly reviewed the population dynamics of high-grain-leaf ratio wheat from the aspects of growth and development, leaf area and stem tiller growth, the physiological characteristics of canopy leaves, the chlorophyll content and photosynthetic rate during senescence, Compared with the photosynthetic characteristics of dry matter accumulation and the dynamic distribution of dry matter accumulation, the population with higher grain-leaf ratio is considered to have higher economic coefficient and higher yield potential.