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[1]姜照伟,郑景生*,沈如色,等.再生稻佳辐占低桩机割再生分蘖节根的萌发特性[J].厦门大学学报(自然科学版),2018,57(05):658-663.[doi:10.6043/j.issn.0438-0479.201803011]
 JIANG Zhaowei,ZHENG Jingsheng*,SHEN Ruse,et al.Germination of Nodal Roots of Ratooning Tillers of Ratoon Rice Cultivar Jiafuzhan Harvested by Low Stubble Machine-cut[J].Journal of Xiamen University(Natural Science),2018,57(05):658-663.[doi:10.6043/j.issn.0438-0479.201803011]
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再生稻佳辐占低桩机割再生分蘖节根的萌发特性(PDF/HTML)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
57卷
期数:
2018年05期
页码:
658-663
栏目:
研究论文
出版日期:
2018-09-27

文章信息/Info

Title:
Germination of Nodal Roots of Ratooning Tillers of Ratoon Rice Cultivar Jiafuzhan Harvested by Low Stubble Machine-cut
文章编号:
0438-0479(2018)05-0658-06
作者:
姜照伟1郑景生2*沈如色1解振兴1俞道标3李义珍1黄育民2王侯聪2
1.福建省农业科学院水稻研究所,福建 福州 350018; 2.厦门大学生命科学学院,福建 厦门 361102; 3.福建省永安市农业技术推广站,福建 永安 366000
Author(s):
JIANG Zhaowei 1ZHENG Jingsheng2*SHEN Ruse1XIE Zhenxing1YU Daobiao3LI Yizhen1HUANG Yumin2WANG Houcong2
1.Rice Research Institute of Fujian Academy of Agricultural Sciences,Fuzhou 350018,China; 2.School of Life Sciences,Xiamen University,Xiamen 361102,China; 3.Yong’an Agricultural Technology Extension Station,Yong’an 366000,China
关键词:
再生稻 分蘖 节根 生长规则
Keywords:
ratoon rice tiller nodal root growth rule
分类号:
S 511
DOI:
10.6043/j.issn.0438-0479.201803011
文献标志码:
A
摘要:
为探索低桩机割再生稻高产途径,研究了水稻品种佳辐占再生分蘖节根的萌发特性.结果表明:头季低桩机割后再生季成穗分蘖为倒4、倒5节分蘖及其子蘖; 倒4、倒5节分蘖有4个发根节,子蘖有3个发根节,每节萌发5~8条节根.各节节根萌发有恒定叶龄期:当第n节叶片开始伸长时,n-3节节根开始萌发(节根原基突破茎秆表皮); 当第n节叶片刚抽出时(该叶伸长近半),n-3节少数节根显著伸长; 当第n节叶片抽出70%时(该叶定长),第n-3节节根萌发数稳定.倒4、倒5节分蘖在头季机割后约10 d,子蘖在头季机割后约20 d,开始从前出叶节萌发节根,至孕穗初始期前后最上一节节根结束萌发,抽穗后不久全部侧根结束萌发.上述结果可为调控再生稻根系发育提供科学依据.
Abstract:
To improve grain yield of ratoon rice harvested by low stubble machine-cut,germination of nodal roots of ratooning tillers of ratoon rice cultivar Jiafuzhan was studied.The productive primary and secondary tillers were found to be located at the fourth and fifth nodes from the top of theratoon rice plant by low stubble machine-cut in main crop.The primary tillers had 4 rooting nodes,while the secondary tillers had 3 rooting nodes,and there were 5-8 roots formed on each node.The root germination was closely correlated with the leaf age:the nodal root primordium on rooting node n-3 began to germinate(i.e.the nodal root primordium broke through stem epidermis)when the leaf n began to elongate,and it elongated significantly as the leaf n reached half of its maximum length,while the number of the roots did not change once the leaf n stopped growing.In the ratoon crop,the primary and the secondary tillers started to germinate roots at 10 d and 20 d after harvest in the main crop,respectively.These roots were found on the prophyll nodes and terminated on the uppermost nodes before and after the beginning of booting stage.Germination of the lateral roots ended soon after the emergence of headings.The observations may provide the basic information on the root development of ratoon rice Jiafuzhan.

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备注/Memo

备注/Memo:
收稿日期:2018-03-06 录用日期:2018-06-12
基金项目:福建省科技厅省属公益类专项(2015R1021-9); 福建省农业科学院青年创新团队项目(STIT2017-3-3); 国际原子能机构合作项目(CRP17031)
*通信作者:zheng21006@xmu.edu.cn
引文格式:姜照伟,郑景生,沈如色,等.再生稻佳辐占低桩机割再生分蘖节根的萌发特性[J].厦门大学学报(自然科学版),2018,57(5):658-663.
Citation:JIANG Z W,ZHENG J S,SHEN R S,et al.Germination of nodal roots of ratooning tillers of ratoon rice cultivar Jiafuzhan harvested by low stubble machine-cut[J].J Xiamen Univ Nat Sci,2018,57(5):658-663.(in Chinese)
更新日期/Last Update: 1900-01-01