花后DA-6处理对玉米自交系郑58种子活力的影响

doi:10.16035/j.issn.1001-7283.2019.01.030

摘要/Abstract

摘要：

DA-6作为一种高效植物生长物质,对多种农作物具有显著的增产、抗逆、抗病、改善品质、早熟等功效,但有关其对种子活力的影响研究少。以玉米自交系郑58为试验材料,将6g/L DA-6分别于花后0、5、15、25、35d均匀喷施于玉米叶片,研究DA-6对玉米种子活力的影响。结果表明,不同时期喷施DA-6可不同程度增加种子内蛋白质含量,进而影响种子活力。不同时期喷施DA-6使得种子活力与对照存在显著性差异,且随着处理时间延后种子活力逐渐升高。在花后35d处理,其种子活力指数达最大值,为0.77,较对照增加0.10,提高14.8%。因此,在玉米自交系郑58花后35d喷施DA-6可有效提高玉米种子活力。

关键词: DA-6, 玉米自交系郑58, 化学成分, 种子活力

Abstract:

As an efficient plant growth regulator, DA-6 had significant effects on crop yield-increasing, stress-resistance, disease-resistance, quality-improving, and early-maturity, however the research about their effect on seed vigor was limited. In this study, a maize inbred line Zheng 58 was used as a test material. 6g/L DA-6 was uniformly sprayed on plant leaves at 0, 5, 15, 25, and 35 days after anthesis (DAS) to study its effects on plant seed vigor. The results showed that spraying DA-6 at different growth stages could increase the protein content of seeds to different levels, and subsequence affect the seed vigor. By comparing to CK, the effect on seed vigor by spraying of DA-6 gradually increased with the postponing of treatment time. The treatment at 35 DAS, the seed vigor index reached a maximum value of 0.77, which was 0.10 higher than that of CK. Therefore, the spraying of DA-6 on maize inbred line Zheng 58 at 35 DAS could increase the seed vigor of maize effectively.

Key words: DA-6, Maize inbred Zheng 58, Chemical composition, Seed vigor

李昊胜,李岩,吴承来,赵林茂,张春庆. 花后DA-6处理对玉米自交系郑58种子活力的影响[J]. 作物杂志, 2019 (1): 186–191

Haosheng Li,Yan Li,Chenglai Wu,Linmao Zhao,Chunqing Zhang. Effects of DA-6 Treatment at Post-Anthesis on Seed Vigor of Maize Inbred Zheng 58[J]. Crops, 2019(1): 186–191

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指标Index	千粒重 1000-grain weight	苗干重 Seedling dry weight	蛋白质含量 Protein content	油脂含量 Oil content	淀粉含量 Starch content	出苗率Emergence rate	发芽指数Germination index	活力指数 Vigor index
千粒重 1000-grain weight	1.000
苗干重 Seedling dry weight	0.400	-1
蛋白质含量 Protein content	0.498	-0.549	-1
油脂含量 Oil content	-0.683	-0.260	-0.218	-1
淀粉含量 Starch content	-0.251	-0.383	-0.894^*	-0.464	-1
出苗率 Emergence rate	-0.352	-0.000	-0.566	-0.913^*	-0.730	1
发芽指数 Germination index	0.382	-0.206	-0.836^*	-0.379	-0.822^*	0.707	1
活力指数 Vigor index	0.465	-0.869^*	-0.841^*	-0.023	-0.705	0.382	0.661	1