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Marginal superiority of maize: an indicator for density tolerance under high plant density.


ABSTRACT: Marginal superiority is a common phenomenon in crops, and is caused by the competitiveness of individual plant for resources and crop adaptability to crowded growth conditions. In this study, in order to clarify the response of marginal superiority to maize morphology and plant-density tolerance, field experiments without water and nutrition stress were conducted at Qitai Farm in Xinjiang, China, in 2013-2014 and 2016-2019. The results showed that no more than three border rows of all the cultivars had marginal superiority under high density, about 90% of all the cultivars had no more than two border row that had marginal superiority and a significant negative correlation was observed between marginal superiority and population grain yield (first border row: y?=?-?2.193x?+?213.9, p?

SUBMITTER: Liu G 

PROVIDER: S-EPMC7505976 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Marginal superiority of maize: an indicator for density tolerance under high plant density.

Liu Guangzhou G   Liu Wanmao W   Yang Yunshan Y   Guo Xiaoxia X   Zhang Guoqiang G   Li Jian J   Xie Ruizhi R   Ming Bo B   Wang Keru K   Hou Peng P   Li Shaokun S  

Scientific reports 20200921 1


Marginal superiority is a common phenomenon in crops, and is caused by the competitiveness of individual plant for resources and crop adaptability to crowded growth conditions. In this study, in order to clarify the response of marginal superiority to maize morphology and plant-density tolerance, field experiments without water and nutrition stress were conducted at Qitai Farm in Xinjiang, China, in 2013-2014 and 2016-2019. The results showed that no more than three border rows of all the cultiv  ...[more]

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