马铃薯主要生理性状和产量性状相关性的研究

以大西洋、滇薯6号、PB04和PB08 4个加工型马铃薯品种(系)为供试材料,进行不同品种块茎形成期主要生理性状和收获时产量特性的比较及部分性状间的相关性研究。结果表明:在马铃薯的块茎形成期大西洋的光合速率最强,根系活力较强,抗逆性较强,其农艺性状和块茎产量特征均表现较好。相关分析结果显示,马铃薯的块茎数量、块茎产量、干物质含量和块茎淀粉含量与光合速率呈正相关,生物产量、块茎数量、块茎产量、干物质含量和块茎淀粉含量与叶片电导率呈负相关,而生物产量与根系活力呈正相关。

Correlation of Physiological Property with Tuber Yield Characters in Potatoes

Physiological property taken at the stage of tuber initiation and tuber yield characters measured at harvesting time were compared for the four processing cultivars(clones),Atlantic,Dianshu 6,PB04,and PB08,and correlation among some of these traits were also made in this research.The net photosynthesis rate of Atlantic was higher than those of other cultivars.In addition,for the cultivar Atlantic root activity was high,relative conductivity was low,and agronomy and tuber yield performed well compared with other cultivars(clones).Tuber number,tuber yield,dry matter content,and starch content were all positively correlated to net photosynthesis rate,but biological yield,tuber number,tuber yield,dry matter content,and starch content were negatively correlated to leaf relative conductivity.Biological yield was positively correlated to root activity.