STUDIES ON COMPETITION IN RICE. III. THE MECHANISM OF COMPETITION AMONG PHENOTYPES
STUDIES ON COMPETITION IN RICE. III. THE MECHANISM OF COMPETITION AMONG PHENOTYPES
复制标题
水稻竞争研究。
DOI：
10.1111/j.1558-5646.1968.tb03990.x
复制
发表时间：
1968
期刊：
影响因子：
3.3
通讯作者：
R. Aquino
中科院分区：
文献类型：
--
作者：
P. R. Jennings;R. Aquino
本系列的前几篇论文（Jennings 和 de Jesus, Jr., 1968；Jennings 和 Herrera, 1968）关注对比水稻植物类型 (Oryza sativa L.) 的品种混合物和杂交群体中表型间竞争的程度和方向。混合物成分的相对产量能力是根据纯林中生长的材料的长期产量试验确定的。结论是，在所提供的农艺和环境变量下研究的材料中，竞争能力和农艺价值呈负相关。这些发现对植物育种家、遗传学家和进化论研究者有许多基本的影响和后果。它们的普遍性部分取决于对竞争机制和竞争能力的更充分理解。文献中有许多关于竞争对生物体繁殖率影响的描述。然而，对于以下关键问题却没有给予同等的关注：（1）竞争对植物发育有何影响？ （2）竞争在什么成长阶段开始？ (3) 赋予竞争能力的植物性状有哪些？ (4) 水稻竞争的因素是什么？需要回答这些问题才能增进对竞争现象的理解。本文对这些方面进行了探讨。
The previous papers in this series (Jennings and de Jesus, Jr., 1968; Jennings and Herrera, 1968) concerned the magnitude and direction of interphenotypic competition in varietal mixtures and hybrid populations of contrasting plant types of rice (Oryza sativa L.). Relative yielding ability of the components of the mixtures was established from long-term yield trials of material grown in pure stand. It was concluded that competitive ability and agronomic worth were negatively associated in the materials studied under the agronomic and environmental variables provided. There are many basic implications and consequences of these findings to plant breeders, geneticists, and students of evolution. Their universality depends, in part, on a fuller understanding of the mechanism of competition and competitive ability. The literature contains many descriptions of the effect of competition on reproductive rates of organisms. Comparable attention, however, has not been given to such critical questions as: (1) What are the effects of competition on plant development? (2) At what growth stage does competition begin? (3) What are the plant characters that confer competitive ability? (4) What is the factor for which rice plants compete? Answers to these questions are required to increase understanding of the phenomenon of competition. This paper treats these aspects.