本文主要研究内容
作者韩继红,邵文豪,刘金凤,刁松锋（2019）在《无患子硬枝扦插进程插穗内源激素和多酚类物质含量变化》一文中研究指出：为了解无患子硬枝扦插生根机制,以1年生无患子硬枝作为扦插材料,在扦插第0—80天调查愈伤组织发育和根系形成情况,测定插穗的腋芽(嫩叶)以及基部2 cm长度的韧皮部内源激素和多酚类物质的含量。结果表明,无患子硬枝扦插第10天开始出现愈伤组织,第50天愈伤率达到最高值83.33%;第40天开始出现生根插穗,生根率为6.67%,随后不定根数量迅速增加,第70天生根率达到86.67%,此时平均有5.33条。之后生根数量不变,根系仍然在生长,且扦插后根系效果指数持续增高。插穗韧皮部内源激素含量变化较复杂。整体来看,高含量赤霉素(GA3)抑制愈伤组织和不定根形成,且在根原基发生期和不定根形成关键期达到峰值,在不定根速生期持续下降;高含量生长素(IAA)促进不定根的形成,且在扦插后第20天,即根原基发生期,达到峰值(92.7μg/g);玉米素核苷(ZR)对无患子硬枝扦插过程的生理作用较复杂,低含量的ZR有利于根原基的发生和不定根速生,但高含量的ZR促进不定根形成。韧皮部ZR/IAA在扦插后第20—40天呈下降趋势,第40—60天快速上升,促进不定根生长;GA3/IAA整体呈现抛物线形下降趋势,特别是在根原基发生期和不定根速生期,下降速率更快,以促进不定根的生长。无患子硬枝插穗生根进程中,多数多酚类物质对愈伤组织形成、根原基发生及不定根形成有极显著抑制作用,没食子酸抑制效果稍弱;插穗内多种激素和多酚类物质的含量均发生了变化,且对插穗生根产生重大影响。总之,插穗根原基发生和不定根形成等关键时期,IAA含量升高,GA3、ZR以及多酚类物质含量降低,植物体内多种内源物质此消彼长,达到动态平衡,共同促进插穗生根。
Abstract
wei le jie mo huan zi ying zhi qian cha sheng gen ji zhi ,yi 1nian sheng mo huan zi ying zhi zuo wei qian cha cai liao ,zai qian cha di 0—80tian diao cha yu shang zu zhi fa yo he gen ji xing cheng qing kuang ,ce ding cha sui de ye ya (nen xie )yi ji ji bu 2 cmchang du de ren pi bu nei yuan ji su he duo fen lei wu zhi de han liang 。jie guo biao ming ,mo huan zi ying zhi qian cha di 10tian kai shi chu xian yu shang zu zhi ,di 50tian yu shang lv da dao zui gao zhi 83.33%;di 40tian kai shi chu xian sheng gen cha sui ,sheng gen lv wei 6.67%,sui hou bu ding gen shu liang xun su zeng jia ,di 70tian sheng gen lv da dao 86.67%,ci shi ping jun you 5.33tiao 。zhi hou sheng gen shu liang bu bian ,gen ji reng ran zai sheng chang ,ju qian cha hou gen ji xiao guo zhi shu chi xu zeng gao 。cha sui ren pi bu nei yuan ji su han liang bian hua jiao fu za 。zheng ti lai kan ,gao han liang chi mei su (GA3)yi zhi yu shang zu zhi he bu ding gen xing cheng ,ju zai gen yuan ji fa sheng ji he bu ding gen xing cheng guan jian ji da dao feng zhi ,zai bu ding gen su sheng ji chi xu xia jiang ;gao han liang sheng chang su (IAA)cu jin bu ding gen de xing cheng ,ju zai qian cha hou di 20tian ,ji gen yuan ji fa sheng ji ,da dao feng zhi (92.7μg/g);yu mi su he gan (ZR)dui mo huan zi ying zhi qian cha guo cheng de sheng li zuo yong jiao fu za ,di han liang de ZRyou li yu gen yuan ji de fa sheng he bu ding gen su sheng ,dan gao han liang de ZRcu jin bu ding gen xing cheng 。ren pi bu ZR/IAAzai qian cha hou di 20—40tian cheng xia jiang qu shi ,di 40—60tian kuai su shang sheng ,cu jin bu ding gen sheng chang ;GA3/IAAzheng ti cheng xian pao wu xian xing xia jiang qu shi ,te bie shi zai gen yuan ji fa sheng ji he bu ding gen su sheng ji ,xia jiang su lv geng kuai ,yi cu jin bu ding gen de sheng chang 。mo huan zi ying zhi cha sui sheng gen jin cheng zhong ,duo shu duo fen lei wu zhi dui yu shang zu zhi xing cheng 、gen yuan ji fa sheng ji bu ding gen xing cheng you ji xian zhe yi zhi zuo yong ,mei shi zi suan yi zhi xiao guo shao ruo ;cha sui nei duo chong ji su he duo fen lei wu zhi de han liang jun fa sheng le bian hua ,ju dui cha sui sheng gen chan sheng chong da ying xiang 。zong zhi ,cha sui gen yuan ji fa sheng he bu ding gen xing cheng deng guan jian shi ji ,IAAhan liang sheng gao ,GA3、ZRyi ji duo fen lei wu zhi han liang jiang di ,zhi wu ti nei duo chong nei yuan wu zhi ci xiao bi chang ,da dao dong tai ping heng ,gong tong cu jin cha sui sheng gen 。
论文参考文献
论文详细介绍
论文作者分别是来自经济林研究的韩继红,邵文豪,刘金凤,刁松锋，发表于刊物经济林研究2019年03期论文，是一篇关于无患子论文,硬枝扦插论文,不定根论文,内源激素论文,多酚类物质论文,经济林研究2019年03期论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自经济林研究2019年03期论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。