论文部分内容阅读
以籼型杂交稻6个不育系和5个恢复系按不完全双列杂交交配设计的30个杂交稻组合及其亲本品种/系为材料,对其剑叶的叶绿素荧光参数进行了测定和分析。结果表明:(1)杂交稻亲本和组合间的叶绿素荧光参数均存在极显著的差异,其中,NPQ和ΦNPQ的变异系数为最大;Fv/Fm的变异系数为最小。(2)不同杂交稻组合ΦNPQ、NPQ和qL的平均值和变异系数均大于其亲本的平均值和变异系数,表明杂交稻组合光能利用率的杂种优势极其明显,这将有利于高光能利用率杂交稻组合的配组。(3)杂交稻的Fm、Fv/Fm、ΦNPQ、NPQ和qL具有中亲优势;其ΦNO具有负向超亲优势;其ΦPSII、ΦNPQ、NPQ和qL具有正向竞争优势。(4)杂交稻组合的ΦPSII、ΦNPQ和NPQ与其母本值呈显著或极显著水平的正相关关系;杂交稻组合的ΦPSII、ΦNPQ与其中亲值呈显著或极显著水平的正相关关系。
Thirty hybrid rice combinations and their parental lines / lines with six lines of indica hybrid rice and five restorer lines designed by incomplete diallel cross were used to determine the chlorophyll fluorescence parameters analysis. The results showed that: (1) There were significant differences in chlorophyll fluorescence parameters between hybrid rice parents and their combinations. Among them, the coefficient of variation of NPQ and ΦNPQ was the largest, and the coefficient of variation of Fv / Fm was the smallest. (2) The average value and coefficient of variation of ΦNPQ, NPQ and qL in different hybrid rice combinations were greater than the average value and coefficient of variation of their parents, indicating that the heterosis of light energy utilization efficiency of hybrid rice combinations was extremely obvious, which would be beneficial to the utilization of high light energy The rate of hybrid rice combination with the group. (3) Fm, Fv / Fm, ΦNPQ, NPQ and qL of hybrid rice had the mid-parental advantage; the ΦNO had the negative super-heterophile superiority; the ΦPSII, ΦNPQ, NPQ and qL had a positive competitive advantage. (4) There was a positive or negative correlation between ΦPSII, ΦNPQ and NPQ and their parental value in hybrid rice combinations. ΦPSII and ΦNPQ in hybrid rice combinations showed a significant or significant positive correlation with their parents.