Effects of Intercropping of Different Genotypes of Maize on Stomatal Characteristics and Yield

doi:10.15933/j.cnki.1004-3268.2024.08.003

Abstract

Abstract: Using four maize varieties[Weiyu 618(WY618),MY73,Yudan 9953(YD9953)and Zhengdan 958(ZD958)]as materials，four single cropping treatments and three intercropping treatments were set up to study the effects of intercropping of different genotypes of maize on stomatal characteristics，spatial layout and yield of maize,so as to provide theoretical basis for increasing maize yield by intercropping of different genotypes of maize from the perspective of stomata.The results showed that maize yield could be improved by intercropping with different genotypes of maize.For WY618 intercropping with MY73 and ZD958,the yield of WY618 significantly increased by 9.41% and 12.94% compared with WY618 single cropping,respectively,and WY618 had more yield advantage.The land equivalent ratio of WY618 intercropping with ZD958 was 1.08,the intercropping advantage was the most obvious，followed by WY618 intercropping with MY73.Maize intercropping could improve the stomatal density,length,width,circumference,area and shape index in the paraxial and abaxial planes of leaves,and make stomatal spatial layout more regular and rational.The density,width and area of stomata in the distal axial plane of leaves were significantly positively correlated with yield.In conclusion,maize intercropping with different genotypes of maize can improve the stomatal characteristics and spatial layout in leaves,which is conducive to the increase of maize yield.

Key words: Maize, Genotype, Intercropping, Yield, Stomatal characteristics, Stomatal spatial layout

摘要： 以4个玉米品种［伟育618（WY618）、MY73、豫单9953（YD9953）和郑单958（ZD958）］为材料，设置4个品种单作和3个间作处理，研究不同基因型玉米间作对玉米叶片气孔特征、空间布局和产量的影响，以期从气孔的角度为不同基因型玉米间作提高产量提供理论依据。结果表明，不同基因型玉米间作能够提高产量，其中，在WY618与MY73间作和WY618与ZD958间作中，WY618间作产量比WY618单作分别显著增加9.41%和12.94%；WY618与MY73间作和WY618与ZD958间作中均是WY618更具有产量优势，WY618与ZD958间作的土地当量比为1.08，间作优势最明显，WY618与MY73间作次之；玉米间作能够提高叶片近轴面和远轴面气孔密度、长度、宽度、周长、面积和形状指数，并且使气孔空间布局更加规则合理；叶片远轴面气孔密度、宽度和面积与产量均存在显著正相关关系。综上，不同基因型玉米间作可以改善叶片气孔特征和空间布局，利于产量提高。

关键词: 玉米, 基因型, 间作, 产量, 气孔特征, 气孔空间布局

CLC Number:

S513

LI Fangjie, CHANG Zhijie, SHI Dakun, WEI Xiaoyi, WEI Feng, HONG Defeng, MA Junfeng, ZHENG Qiudao. Effects of Intercropping of Different Genotypes of Maize on Stomatal Characteristics and Yield[J]. Journal of Henan Agricultural Sciences, 2024, 53(8): 21-29.

李方杰, 常志杰, 史大坤, 卫晓轶, 魏锋, 洪德峰, 马俊峰, 郑秋道. 不同基因型玉米间作对气孔特征和产量的影响[J]. 河南农业科学, 2024, 53(8): 21-29.

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