棉花种子球化处理对幼苗生长发育的影响
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湖南省农业农村厅项目(湘财建指(2021)142号–10);湖南省重点研发计划(2020NK2023);棉花生物学国家重点实验室开放课题基金项目(CB2020A18);国家重点研发计划(2018YFD0100404)


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    摘要:

    以早熟直播棉品种JX0010为试验材料,采用木薯改良性淀粉、膨润土、硅藻土、凹凸棒土和育苗基质对棉花种子进行球化处理,以未球化处理的种子为对照,进行盆栽试验,探究球化育苗技术对棉花出苗及幼苗生长特性的影响。结果表明:球化处理后的棉花种子出苗率为95.83%~100.00%,出苗穴率为100.00%,出苗速率为33.33%~50.00%,出苗率、出苗穴率和出苗速率较对照分别提高16.67%~33.33%、8.33%~33.33%和16.66%~25.00%;球化处理后的棉花幼苗SPAD值为42.48,与对照差异不显著;球化处理棉苗的SOD活性、POD活性、可溶性蛋白含量、可溶性糖含量、硝酸还原酶活性、根系脱氢酶活性、株高以及根、茎、叶的干质量和鲜质量等指标相较对照都有显著提高;种子球化处理棉花幼苗丙二醛的含量相较对照显著降低。综合分析,棉花种子球化处理能显著提高棉花的出苗率,改善棉苗生长素质。

    Abstract:

    In this study, early maturing direct seeding cotton variety JX0010 were selected to serve the experimental material to explore the effect of the new spheroidized seedling raising technology on the emergence and growth characteristics of cotton seedlings. The cotton seeds were spheroidized with cassava modified benign starch, bentonite, diatomite, attapulgite and seedling substrate. The pot experiment was carried out with the non spheroidized seeds as the control. The results showed that the emergence rate of cotton seeds after spheroidizing treatment was 95.83%-100.00%, the emergence hole rate was 100.00%, and the emergence rate was 33.33%-50.00%. Compared with the control, the emergence rates were increased by 16.67%-33.33%, 8.33%-33.33%, 16.66%-25.00% respectively; The SPAD value of cotton seedlings after spheroidizing treatment was 42.48; Compared with the control, the indexes of SOD activity, POD activity, soluble protein content, soluble sugar content, nitrate reductase content, root activity, plant height, dry quality and fresh quality of cotton seedlings treated with spheroidization were significantly improved. The malondialdehyde content of cotton seedlings treated with seed spheroidization was significantly lower than that of the control.In conclusion, the cotton seed spheroidization could significantly improve the emergence rate of cotton and improve the growth quality of cotton seedlings.

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谢章书,李侃,杨丹,何玉玺,熊圆,邹佳怡,刘爱玉,贺云新,周仲华.棉花种子球化处理对幼苗生长发育的影响[J].湖南农业大学学报(自然科学版),2022,48(3):.

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  • 在线发布日期: 2022-09-14
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