亚麻根系活力与主要农艺性状的相关性研究

对亚麻根系活力与地上部主要农艺性状进行了研究,结果表明:亚麻根系的还原强度以枞形期至现蕾期最高,以后逐渐递减,其中上段根递减最快,其次为中段根,下段根比较平稳。在枞形期和快速生长期,上段和中段根的还原强度分别比下段根高出37.78%~84.6%和20.40%~45.39%,进入成铃期,三段根的还原强度几乎无差异。还原强度与单株果数、单株粒重、单株花朵数呈高度正相关,与结实率呈负相关,根系干重的增长符合Log istic生长方程,根系干重与平均增长速率、渐增期增长速率、快增期增长速率呈极显著正相关,与增长期长短关系不显著,根系干重与单株果实数,单株粒重,单株花朵数呈极显著正相关,与结实率呈显著负相关。

Analysis on correlation between root vigor and main agronomic characters of flax

The experiment was conducted to determine the correlation between root vigor and main agronomic characters of flax.The results indicated that the deoxidization intensity of roots was the highest during seedling to budding stage of flax,and then it reduced gradually;the deoxidization intensity in the upper part of roots reduced fast,in the middle part was following,and in the lower part was rather stable.During the seedling to budding stage,the deoxidization intensity of the upper part and middle part of roots were higher than that of the lower part by 37.78%~84.6% and 20.40%~45.39%,respectively;however,during capsule forming stage,the deoxidization intensity of the three parts of roots were almost the same.The deoxidization intensity was positively correlated to the number of capsules per plant,seed weight per plant and number of flowers per plant,and negatively correlated to the seeding ratio.The increase of dry weight of roots accorded with logistic growth-equation.The dry weight of roots was significantly positively correlated to the average increase rate,the increase rate at gradual increasing stage and the increase rate at fast increasing stage,but not significantly correlated to the length of growth period;it was significantly positively correlated to the number of capsules per plant,seeds weight per plant and number of flowers per plant,and negatively correlated to the seeding ratio.