马铃薯品种淀粉含量和大中薯比率稳定性分析

Stability Analysis of Potato Starch Content and the Rate of Large and Middle Tuber

摘要:

笔者试用回归分析法对6个马铃薯品种淀粉含量和大中薯比率的试验结果进行稳定性分析,并通过相关分析对淀粉含量的稳定性与五个主要农艺性状的相互关系进行了初步研究。结果表明,不同品种淀粉含量和大中薯比率的回归系数有很大差别,除大7701－44淀粉含量回归系数不显著外,其系品种b值均达显著或极显著水平。在淀粉含量的稳定性与主要农艺性状的相互关系研究中,淀粉含量的稳定性与出苗至成熟天数呈较强的正相关,与大中薯比率、块茎产量呈较强负相关,与株高、病毒株率呈弱负相关。

Abstract:

The stabilities of starch content and the rate of large and middle tuber of 6 potato Varieties and relationships between stabilities of starch content and 5 main agronomical characters were studied.The result indicatd that vegression coefficient of starch content and the rate of large and middle tuber had gread difference among varieties,all of them reached significant levels except Da-7701-44.There were positive correlation between starch content and days from emergence of seedlings to tuber maturity.But negative correlations were also showed between starch content and other characters,such as the rate of large and middle tuber,yield,plant height and proportion of virus infection plant.