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 bree...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.展开更多
文摘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.
