烯效唑对向日葵生长调控效应的影响

doi:10.3969/j.issn.2096-1197.2019.06.01

Abstract

Abstract: In order to reveal the regulation effect of the uniconazole on sunflower growth,using a high yield,high quality, and stalk feed varieties SH361 as materials,we set different uniconazole concentration treatments of seed soaking and leaf spraying. The results showed that, after soaking seed with a concentration of 230 mg/L uniconazole, the sunflower plant height and stem diameter decreased with the plant height being 37.7% lower than the control,the petiole had shorter length,and the leaf area in the flowering period was inhibited significantly by 44.55% compared with the control. After leaf spraying,the plant height did not decrease,while the stem diameter,the petiole length, and the leaf area increased. Compared with the control, the stem diameter and petiole length with a concentration of 400 mg/L were increased by 17.02% and 5.57%,respectively. The chlorophyll SPAD value was increased by seed soaking and leaf spraying. The results showed that seed soaking with 230 mg/L decreased the growth index and leaf spraying with 400 mg/L uniconazole increased the sunflower growth index significantly.

Key words: Uniconazole, Sunflower, Growth, Regulating Effect

CLC Number:

S565.5

DU Chao, ZHANG Runsheng, WEN Aiqing, LI Jun, WANG Gang, REN Zhiyuan, ZHANG Junfeng, WU Xuerui. Influence of uniconazole on the growth regulating effect of sunflower[J].Journal of Northern Agriculture, 2019, 47(6): 1-8.

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Influence of uniconazole on the growth regulating effect of sunflower

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