Part Physical Characteristics Research of Three High-yield Corn Varieties

• Published in: The journal of Northeast Agricultural University Vol. 17; no. 3; pp. 6 - 11
• Main Author: WANG Chunhu LI Ning WANG Hao
• Format: Journal Article
• Language: English
• Published: College of Life Sciences,Henan Institute of Science and Technology,Xinxiang 453003,Henan,China%College of Foreign Language,Henan Normal University,Xinxiang 453007,Henan,China%Department of Biology Technology,Hainan University,Haikou 570228,China 2010
• Subjects: physiological characteristic; mechanism of high yield; shape index; corn
• ISSN: 1006-8104

The physiological properties of new compact vertical-leaf type varieties, such as corn Zhengdan 958, Xundan 18, Jidan 7, etc. were analyzed in order to provid references for its large extension and new high-yield breeding. Results showed that reasons of high-yield included reasonable indices of leaf-area changing, long keeping of corn leaves and slow aging. Photosynthetic pigment, protein and soluble sugar in varietal leaves were high with the high peroxide enzyme activation, photosynthesis inherent ability and photosynthesis efficiency, but with low malondialdehyde. The volume of grain seed was big, with long forming or starch grouting time of cells and the weight of thousand-granules was high. It indicated that Zhengdan 958 was still the best corn variety for the extensive utilization. The seeds production should pay attention to keep the pure degree and the hallmark for giving full potential advantages on the yield of these species.