Changes in Plant-to-Plant Variability among Maize Individuals and their Relationships with Plant Density and Grain Yield

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	Changes in Plant-to-Plant Variability among Maize Individuals and their Relationships with Plant Density and Grain Yield
	Li, J.1,3; Xie, R. Z.2; Wang, K. R.2; Hou, P.2; Ming, B.2; Guo, Y. Q.2; Sun, Y. L.1,2; Zhang, G. Q.1,2; Zhao, R. L.4; Li, S. K.1,2
刊名	PHILIPPINE AGRICULTURAL SCIENTIST
	2015
卷号	98 期号:1 页码:89-97
关键词	ear height grain yield maize plant density plant-to-plant variability
ISSN号	0031-7454
通讯作者	Li, J.
英文摘要	In order to investigate the changes in plant-to-plant variability (PPV) in maize and their relationships with plant density and grain yield (GY), a 2-year field experiment was carried out at Ningxia University farm, Bole, 71 Group, and Qitai Farm in northwestern China. Ten modern cultivars were sown in 190 blocks in which plant density ranged from 6.0 to 15.96 plants m(-2), GY ranged from 12.28 to 21.71 t ha(-1). With an increase in plant density from 6.0 to 15.96 plants m(-2), plant height (PH) and ear height (EH) increased from 2.66 to 3.36 m and from 0.93 to 1.55 m, respectively; kernel number per ear (KNE) and kernel weight per ear (KWE) decreased from 675.4 to 342 kernels and from 257.1 g to 106.37 g, respectively. The regular degree (RD = 1/CV, where CV is the coefficient of variation) for PH, EH, KNE, KWE ranged from 8.70 to 45.33%, from 7.17 to 21.98%, from 2.79 to 9.61%, and from 2.24 to 10.75%, respectively; there was no significant relationship between RD and plant density; however, the RDs for EH and KNE increased linearly with increasing GY. RD and GY were not correlated within the following density ranges: 6.0-8.0 plants m-2 or >= 13 plants m(-2). However, within the density range 8.0-13.0 plants m(-2), the correlation coefficients for the relationship between RD and GY increased with increasing plant density. When maize plant growth stages and operational field regulations are taken into consideration, the RD for EH is a useful indicator of PPV.
学科主题	Agriculture, Multidisciplinary
语种	英语
出版者	UNIV PHILIPPINES LOS BANOS
WOS记录号	WOS:000353182100012
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/4759]
专题	作物科学研究所
作者单位	1.Shihezi Univ, Coll Agr, Key Lab Oasis Ecol Agr, Xinjiang Prod & Construct Grp, Shihezi 832000, Xinjiang, Peoples R China 2.Chinese Acad Agr Sci, Inst Crop Sci, Minist Agr, Key Lab Crop Physiol & Ecol, Beijing 100081, Peoples R China 3.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biol, Anyang 455000, Peoples R China 4.Ningxia Acad Agr Sci, Inst Crop Sci, Yongning 750105, Ningxia Hui Aut, Peoples R China
推荐引用方式 GB/T 7714	Li, J.,Xie, R. Z.,Wang, K. R.,et al. Changes in Plant-to-Plant Variability among Maize Individuals and their Relationships with Plant Density and Grain Yield[J]. PHILIPPINE AGRICULTURAL SCIENTIST,2015,98(1):89-97.
APA	Li, J..,Xie, R. Z..,Wang, K. R..,Hou, P..,Ming, B..,...&Li, S. K..(2015).Changes in Plant-to-Plant Variability among Maize Individuals and their Relationships with Plant Density and Grain Yield.PHILIPPINE AGRICULTURAL SCIENTIST,98(1),89-97.
MLA	Li, J.,et al."Changes in Plant-to-Plant Variability among Maize Individuals and their Relationships with Plant Density and Grain Yield".PHILIPPINE AGRICULTURAL SCIENTIST 98.1(2015):89-97.