Studies on the Correlation of Photosynthetic Characters of Three EarLeaves in Corn

doi:10.3321/j.issn:1000-7091.1997.04.015

Abstract

Abstract: Apparent photosynthetic rate(PR),specific leaf weight (SLW),nitrogen contents of leaf(NCL),leaf thickness(LT),stomatal density (SD) and vascular bundle density(VBD) were determined for three ear leaves of corns that grew in a field in 1993-1994.The results showed:(1)dynamic change of different hybrids varied from silking stage to maturity, the tendency of SLW and NCL was similar;(2)the difference of PR,SLW,NCL,LT,SD and VBD was significant for different hybrids;(3)SLW,NCL,LT,SD and VBD of three ear leaves were positively correlated with PR at silking stage, the contribution of which to three ear leaves was NCL>SLW>LT>SD>VBD;(4)PR,SLW,NCL and LT belonged to quantitative heredity, SD and VBD belonged to qualitative genetics.

Key words: Corn, Three earleaves, Photosynthetic character, Correlation

CLC Number:

S513.01

Cui Junming, Zhang Jinzhong, Lu Daowen, Wang Hailong, Zhang Fuquan. Studies on the Correlation of Photosynthetic Characters of Three EarLeaves in Corn[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(4): 73-77. doi: 10.3321/j.issn:1000-7091.1997.04.015.

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