甘薯秧苗素质对块根分化建成和产量的影响

以淀粉型甘薯品种济徐23为材料,研究秧苗素质对块根分化建成和产量的影响。结果表明,与弱苗处理相比,壮苗处理的幼根发育早、发育好;壮苗处理的分化根中,初生形成层的活动能力更强,次生形成层分布范围广;栽植后20~30 d,壮苗处理显著提高了分化根中玉米素核苷（ZR）的含量;栽植后40 d,壮苗处理显著提高了分化根中脱落酸（ABA）的含量。在块根膨大期间,壮苗处理的块根膨大速率始终高于弱苗处理,而T/R值始终低于弱苗处理。与弱苗处理相比,壮苗处理单株结薯数增加17.53%,块根产量提高10.76%。...

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Published in西南农业学报 Vol. 28; no. 3; pp. 1003 - 1008
Main Author 司成成 史春余 王振振 柳洪鹃 刘桂玲 孙哲
Format Journal Article
LanguageChinese
Published 山东农业大学农学院/作物生物学国家重点实验室,山东泰安,271018%山东省泰安市农业科学研究院,山东泰安,271000 2015
Subjects
块根形成和膨大
甘薯
生理基础
秧苗素质
生理基础
Seedling quality
Sweet potato
甘薯
Tuber formation and enlargement
Physiological basis
秧苗素质
块根形成和膨大
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ISSN1001-4829
DOI10.16213/j.cnki.scjas.2015.03.015

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Summary:以淀粉型甘薯品种济徐23为材料,研究秧苗素质对块根分化建成和产量的影响。结果表明,与弱苗处理相比,壮苗处理的幼根发育早、发育好;壮苗处理的分化根中,初生形成层的活动能力更强,次生形成层分布范围广;栽植后20~30 d,壮苗处理显著提高了分化根中玉米素核苷（ZR）的含量;栽植后40 d,壮苗处理显著提高了分化根中脱落酸（ABA）的含量。在块根膨大期间,壮苗处理的块根膨大速率始终高于弱苗处理,而T/R值始终低于弱苗处理。与弱苗处理相比,壮苗处理单株结薯数增加17.53%,块根产量提高10.76%。
Bibliography:SI Cheng--cheng,SIII Chun-yu, WANG Zhen-zhen, LIU Hong-juan, LIU Gui-ling, SUN Zhe （ 1. Agronomy College, Shandong Agricultural University/State Key Laboratory of Crop Biology, Shandong Tai＇ an 271018, China; 2. Taian Academy of Agricultural Sciences, Shandong Tai＇ an 271000 ,China）
51-1213/S
Sweet potato; Seedling quality; Tuber formation and enlargement; Physiological basis
Taken a starch sweetpotato varlety＇ Jixu 23 ＇ as tested material, the effect of its seedling quality on the forrna~on and yield of tuber root was studied. The results showed that compared with weak seedlings, strong seedlings＇ mot developed earlier and better than that of weak seedlings. In the differentiation roots of strong seedlings＇ treatment, its newbem cambium activity was stronger, and secondary layer formed wide distribution; After planting 20 - 30 d, strong seedlings＇ treatment significantly increased the differentiation of roots zeatin rlboside （ZR） content, and after planting 40 d, strong seedlings＇ treatment significantly increa
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2015.03.015