Investigation on Agronomic Characters of Dwarf Mutant 778 in Broomcorn Millet(Panicum miliaceum L.)and Analysis of Its Sensitivity to GA

Bo ZHANG; Dezhi YANG; Dianyun HOU; Lingfeng DAI; Shujun KOU; Xiaojie LIU; Xiaomei ZHANG; Xiaoping JIA; Xuehai ZHU; Yingjie GUO; Yuan ZHAO

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Investigation on Agronomic Characters of Dwarf Mutant 778 in Broomcorn Millet(Panicum miliaceum L.)and Analysis of Its Sensitivity to GA

Investigation on Agronomic Characters of Dwarf Mutant 778 in Broomcorn Millet(Panicum miliaceum L.)and Analysis of Its Sensitivity to GA

作者：

Bo ZHANG Dezhi YANG Dianyun HOU Lingfeng DAI Shujun KOU Xiaojie LIU Xiaomei ZHANG Xiaoping JIA Xuehai ZHU Yingjie GUO Yuan ZHAO

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Panicum

miliaceum

Dwarf

mutant

Agronomic

traits

Dwarfing

approach

摘要：

In order to investigate the differences between agronomic traits of dwarf mutant and original material 260 and whether the cause of dwarf is related to GA synthesis or signaling pathway,this experiment used dwarf mutant 778 and its original material 260 as experimental materials.Morphological observation and determination were performed for agronomic traits on plant height,ear length,internode length,internode number,seed length,seed width and number of seeds in different growth periods and different concentrations.The plants were treated by GA spraying,and the changes of plant height,root length,stem width,leaf length and leaf width were measured.The results are as follows:①The plant height of the dwarf mutant material was significantly different from that of the original high material,which was mainly caused by the difference between above-ground basal part and the length of the first and second elongation joints.②Comparing and analyzing the differences of traits between dwarf mutant material 778 and original high material 260,it was found that the plant height,ear length,internode number,grain number per ear and internode length of dwarf mutant 778 were significantly lower than that of high stalk 260(P<0.01),and the seed length of dwarf mutant 778 was significantly higher than that of high stalk 260(P<0.05).③Different concentrations of gibberellin(0,50,100,200 mg/L)had no significant effect on plant height and root length of dwarf mutant 778(P>0.05).Different concentrations of gibberellin had significant effects on plant height,root length and sensitivity coefficient of high stalk 260(P<0.05).And compared with the control group,all high materials 260 treated with different concentrations of gibberellin performed differently in plant morphology and growth potential.④Under the conditions of 100 and 200 mg/L GA,the difference of plant height between the dwarf mutant and the high stalk control decreased with time,and there was no difference at the end.There were no differences in sensitivity coefficient GR

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篇名	Investigation on Agronomic Characters of Dwarf Mutant 778 in Broomcorn Millet(Panicum miliaceum L.)and Analysis of Its Sensitivity to GA
来源期刊	农业生物技术:英文版	学科	农学
关键词	Panicum miliaceum L. Dwarf mutant Agronomic traits GA Dwarfing approach
年，卷（期）	2020,（4）	所属期刊栏目
研究方向		页码范围	7-11
页数	5页	分类号	S51
字数		语种
DOI