莠去津与东方百合农艺性状及生理指标的相关性分析

The relationship between atrazine and the characters of agronomy and physiology in oriental lily

对百合不同的生长期进行莠去津除草剂处理,观察百合鳞茎萌芽前处理的农艺性状,及相应生理指标间的关系。结果表明,不同生长时期喷药对百合植株影响差异较大,萌芽前处理,对百合的生长量影响较小,但也表现出生理方面有差异性。处理与对照比较,叶绿素含量、可溶性糖、暗呼吸速率提高,净光合速率、比叶重、鳞茎干物质下降。经相关性分析,可溶性糖与暗呼吸速率呈正相关,可溶性糖的升高,在一定范围内干扰了光合作用正常运行,表明莠去津主要影响百合叶绿体的糖类代谢与输出、CO2的固定,进而影响了光合产物的积累。

We investigated the agronomic and physiological characters of the lily bulbs, which were treated with atrazine in different growth phases before sprouting. The results showed that atrazine had different effects on the plants in different growth phases. Comparatively, the bulbs treated before sprouting were less significantly affected except some physiological changes. The content of chlorophyll, soluble sugar content and dark respiration rate increased in bulbs of the treated plants, while net photosynthesis rate, special leaf weight and dry matter weight decreased. The result of correlative analysis showed that the content of soluble sugar was positively correlated with dark respiration rate. The increase of soluble sugar content disturbed the photosynthesis of plants to some extent. Thus, it was demoastmted that atrazine could affect the accumulation of photosynthetic products in lily plants through influencing the metabolism and transportation of sugar, and CO2 fixation in the chloroplast.