外源植物激素对白枪杆幼苗生物量分配的影响
收稿日期: 2021-03-26
修回日期: 2021-05-25
网络出版日期: 2021-08-04
基金资助
国家自然科学基金(31260191);云南省教育厅科学研究基金(2019Y0125)
Effect of Exogenous Plant Hormones on Biomass Allocation of Fraxinus malacophylla Seedlings
Received date: 2021-03-26
Revised date: 2021-05-25
Online published: 2021-08-04
以白枪杆容器苗为材料,采用 L9(34) 正交实验方法,测定玉米素(ZT) 、3-吲哚乙酸(IAA) 和赤霉素(GA3) 3 种外源植物激素不同组合处理下白枪杆幼苗的生物量,比较分析幼苗生物量及其分配与不同激素的关系,并采用标准主轴回归分析白枪杆幼苗各器官之间在不同外源植物激素处理下的异速生长关系。结果表明:不同外源植物激素中,ZT和IAA对幼苗生物量起主导作用,而GA3作用不明显。不同处理间生物量及各器官生物量分配存在显著差异,4号处理(ZT 50mg/L,IAA 50mg/L,GA3 150mg/L)各器官生物量显著大于其他处理,但各器官生物量分配比不显著,9号处理(ZT 75 mg/L,IAA 150 mg/L,GA3 150mg/L)总生物量最小,但具有较高的茎生物量分配比。不同外源植物激素处理下各器官之间异速生长关系不同,但总体均呈等速生长,说明外源植物激素对白枪杆幼苗的异速生长影响不显著。不同外源植物激素作用下,白枪杆幼苗生物量显著改变,幼苗对环境中资源的分配无明显变化。
段华超 , 郑鑫华 , 李燕燕 , 叶澜 , 井卉竹 , 董琼 . 外源植物激素对白枪杆幼苗生物量分配的影响[J]. 林草资源研究, 2021 , 0(3) : 76 -83 . DOI: 10.13466/j.cnki.lyzygl.2021.03.012
Taking Fraxinus malacophylla container seedlings as materials,L9 (3 4) orthogonal experiment method was used to determine the biomass of Fraxinus malacophylla seedlings under three exogenous plant hormones,zeatin (ZT),3-indoleacetic acid (IAA),and gibberellin (GA3),the relationship between the biomass and its distribution of different seedlings and different hormones was compared and analyzed.The allometric growth relationship between different organs of Fraxinus malacophylla seedlings under different exogenous plant hormone treatments was analyzed using standard spindle regression.The results showed that among different exogenous plant hormones,ZT and IAA dominated the biomass of seedlings,and GA3 had no significant effect;there was a significant difference in biomass and biomass allocation of different organs between different treatments.Treatment No.4 (ZT 50mg/L,IAA 50mg/L,GA3 150 mg/L) was significantly larger than other treatments,but the biomass allocation ratio of each organ was not significant.Treatment No.9 (ZT 75 mg/L,IAA 150 mg/L,GA3150 mg/L) had the smallest total biomass,but it had a higher stem biomass distribution ratio.The allogeneic growth relationship between different organs under different exogenous plant hormone treatments was different,but the overall growth was isokinetic,indicating that the effect of exogenous plant hormones on allometric growth of Fraxinus malacophylla seedlings was not significant.Under the action of different exogenous plant hormones,the biomass of Fraxinus malacophylla seedlings has changed significantly,and the distribution of resources in the environment by the seedlings has not changed significantly.
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