Gao Yuan, Yang Yun-fei
Ministry of Education Key Laboratory for Vegetation Ecology, Institute of Grassland Science, Northeast Normal University, Changchun 130024, China.
Ying Yong Sheng Tai Xue Bao. 2011 Apr;22(4):923-8.
The reproductive tillers of Elymus excelsus population in Songnen Plain were randomly marked with labels every other four days (five times in total) at early earring stage, and the marked tillers were harvested at dough stage, with the differences of their quantitative characteristics as well as the relationships between the quantitative characteristics and the shortened time of reproductive growth were analyzed. With the shortened time of reproductive growth, the quantitative characteristics of the reproductive tillers decreased gradually, which was not beneficial to the reproductive growth, reproductive allocation, and fruiting of reproductive tillers. The later the earring time, the larger the impact on fruiting and reproductive allocation was. When the reproductive growth time was shortened by 16 days, the grain biomass, setting penentage, reproductive allocation I , and reproductive allocation II decreased by 99.4%, 98.8%, 54.3%, and 99.2%, respectively. With the shortened time of reproductive growth, the tiller height decreased linearly, spike biomass, reproductive allocation I, and setting penentage decreased exponentially, tiller biomass, spike length, and floret number decreased powerly, and grain biomass, grain number, and reproductive allocation II decreased logarithmically.
在松嫩平原，于抽穗初期每隔四天（共五次）对肥披碱草种群的生殖分蘖随机进行标记，在乳熟期收获标记的分蘖，分析其数量特征的差异以及数量特征与生殖生长缩短时间之间的关系。随着生殖生长时间的缩短，生殖分蘖的数量特征逐渐降低，这不利于生殖分蘖的生殖生长、生殖分配和结实。抽穗时间越晚，对结实和生殖分配的影响越大。当生殖生长时间缩短16天时，粒生物量、结实率、生殖分配I和生殖分配II分别下降了99.4%、98.8%、54.3%和99.2%。随着生殖生长时间的缩短，分蘖高度呈线性下降，穗生物量、生殖分配I和结实率呈指数下降，分蘖生物量、穗长和小花数呈幂函数下降，粒生物量、粒数和生殖分配II呈对数下降。
