特效植物营养素对迟菜心淀粉酶活力及种子后代的影响

Effect of SPNE on seed progeny and amylase activity of late flowering cabbage

利用特效植物营养素(SPNE)分别喷施迟菜心2次、1次,用清水喷施作对照,首次探讨喷施次数对迟菜心当代淀粉酶活力与产量的影响。将喷施SPNE 2次和对照的种子进行了分析,研究了SPNE的表观遗传效应对后代幼苗过氧化物酶(POD)活力的影响。结果表明,SPNE喷施增城迟菜心后,淀粉酶活力显著提高,迟菜心产量大幅度提高,且随着喷施次数增加,两者对应增加,喷施2次的比喷施1次的高,喷施1次的比对照高,相关分析结果表明,淀粉酶活力与迟菜心产量呈正相关。SPNE喷施迟菜心2次后种子也比对照大幅增产,种子千粒重增加,发芽势显著增加,种子后代活力增强。幼苗的叶面积更大,根系更发达,POD活力极显著提高,抗逆性增强,长势更佳。同时,进一步探讨了SPNE在迟菜心后代的表观遗传效应产生机理。

SPNE （Special Plant Nutritional Element） was sprayed one or two times, and the effects of spraying time on amylase activity and yield of late flowering cabbage were studied comparing with the control spraying with water. Serial analysis between the seeds of twice SPNE spraying and the control was done to test the effect of SPNE epigenetic effect of SPNE on the peroxidase activity of progeny seedling. The results showed that amylase activity as well as the yield of the late flowering cabbage increased significantly after spraying SPNE along with the increase of spray times, and the both indexs exihibited higher in twice spraying than in once spraying. Correlation analysis results also showed a positive correlation between the amylase activity and the yield of late flowering cabbage. Comparing with the control, the yield, 1000-grain weight, germinative force and vitality for cabbage seeds increased significantly after twice spraying, as well as, the leaf area became larger, the root system developed better, the peroxidase activity improved obviously, showing stronger for stress resistance and better for growth vigor. The mechanism of the effect of SPNE on late flowering cabbage was further studied in this paper.