贵州不同产地头花蓼的主要农艺性状及光合特性

摘要

To screen superior provenance of P.capitatum,the main agronomic traits,total biomass and photosynthesis of P.caitatum from different districts were detected,such as Xingyi,Anlong,Qinglong,Panxian,Longli,and Guiding in Guizhou Province.The results showed that the main agronomic traits,total biomass and photosynthesis of P.capitatum existed significant difference between the six districts in Guizhou (P＜0.05).The agronomic traits and total biomass of P.capitatum in Panxian was better than any other districts.Net photosynthetic rate in Longli was better than other districts.Net photosynthetic rate showed a positive correlation with stomatal conductance and transpiration rate.While exhibited a negative correlation with intercellular CO2 concentration and water use efficiency.Conclusion:P.capitatum from Panxian was selected to be superior provenance.%为了筛选头花蓼优良种源,对贵州兴义、安龙、晴隆、盘县、龙里和贵定头花蓼的主要农艺性状、总生物量和光合作用进行了测定.结果表明:贵州不同地方头花蓼的主要农艺性状、总生物量及光合特性均存在显著差异(P＜0.05),其中,盘县头花蓼的农艺性状和总生物量最优,龙里头花蓼的净光合速率最高；净光合速率与气孔导度、蒸腾速率之间呈正相关,而与胞间CO2浓度、水分利用率之间呈负相关.结论:盘县头花蓼可作为头花蓼优良品种选育的种源.