亚麻根系生长动态规律的研究

选用不同基因型的亚麻材料,对其根系体积和干重的动态增长规律进行了研究,结果表明：亚麻根系体积和干重的增长符合Logistic生长方程,根体积的渐增期为28.7～37.4d,快增期为32.1～36.7d,缓增期为27.8～40.3d,根体积增长与快增期、缓增期增长速率呈显著正相关,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,与增长期呈正相关但不显著。干重的渐增期为33.5～40.00d,快增期为4.09～8.19d,缓增期为23.4～38.50d。根干重增长量与平均增长速率,最大增长速率,渐增期长短,渐增期增长速率,快增期增长速率,缓增期增长速率等性状呈极显著正相关。

Dynamic Growth of Flax Root

To select different genotypes of flax material,the root volume and dry weight of the dynamic growth were studied. The results showed that the root volume and dry weight were in line with the Logistic growth equation. The growing period for the root volume was 28. 7 d ～ 37. 4 d,the fast growing period was 32. 1 d ～ 36. 7d,the easing period was 27. 8 d ～ 40. 3 d. There was a significant positive correlation between the root volume growth and the growth rates of the fast growing period and the easing period,was a highly significant positive correlation with the average growth rate,the easing growth rate and the fast growth rate,and was a positive correlation with the growth rate but not significantly. The growing period of dry weight was 33. 5 d ～ 40. 00 d,the fast growing period was 4. 09 d ～ 8. 19d,the easing growth period was 23. 4 d ～ 38. 50 d. There was a highly significant positive correlation between the dry weight growth rate and the average growth rate,the maximum growth rate,the time of growing period,the fast growth rate and the easing growth rate.