论文部分内容阅读
从杂交高粱及其亲本的PEP羧化酶、丙酮酸磷酸二激酶、NADP-苹果酸酶和NAD-苹果酸脱氢酶活性比较了它们的光合碳代谢特性,也比较了它们在光合强度、CO_2补偿点和产量指标上的差异,分析了不同组合的杂种的叶面积和产量构成因素在各生育期的变化。高产的杂交种比其亲本有较高的关键酶活性、高光合强度和低的CO_2补偿点,其光合特性具有超亲优势,并在这些优势和增加体内物质向穗内分配的基础上增加了穗粒数。
Their photosynthetic carbon metabolism characteristics were compared from PEP carboxylase, pyruvate phosphate dikinase, NADP-malic enzyme and NAD-malate dehydrogenase activity of hybrid sorghum and their parents, and their photosynthetic carbon dioxide Compensation points and yield indicators of the differences in different combinations of hybrid leaf area and yield components in each growth period changes. The high-yielding hybrids had higher key enzyme activity, higher photosynthetic intensity and lower CO 2 compensation points than their parents, and their photosynthetic characteristics had super-parents superiority. Based on these advantages and the increase of intra-ear material distribution, Spike grain number.