Comparison of Photosynthetic Characteristics of Parents and Hybrids of Corn ( Zea mays L.)

doi:10.3321/j.issn:1000-7091.1997.02.008

Abstract

Abstract: The photosynthetic characteristics of 4 hybrids and their parents of corn were comparetively analysed in this paper.There were 3 kinds of types in leaf area of hybrids:middle,inclined to high parent and superhigh parent. The hybrid was negative hybrid vigor in photosynthetic time,but positive vigor in photosynthetic rate which ranged from 3.1% to 23.4%.The photosynthetic vigor in hybrid was related with concentration of chlorophyll.The ratios of chlorophyll a/b and carotene/chlorophyll in hybrids were lower than that in their parents. Hybrid vigor in grain yield primarily dependent upon the sink and source system.

Key words: Corn, Photosynthesis, Hybrid

CLC Number:

S513.035

Zhao Ming, Wang Meiyun, Li Shaokun. Comparison of Photosynthetic Characteristics of Parents and Hybrids of Corn ( Zea mays L.)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(2): 39-43. doi: 10.3321/j.issn:1000-7091.1997.02.008.

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