华北农学报 ›› 2015, Vol. 30 ›› Issue (3): 163-169. doi: 10.7668/hbnxb.2015.03.028

所属专题: 水稻 生物技术

• 论文 • 上一篇    下一篇

抑制无效分蘖对不同基因型水稻根系特征及养分吸收的影响

陈燕红1, 唐湘如1,2, 肖瑶1, 吴颖仪1, 段美洋1,2, 田华1,2, 肖立中1,2, 潘圣刚1,2   

  1. 1. 华南农业大学 农学院, 广东 广州 510642;
    2. 农业部华南地区作物栽培科学观测实验站, 广东 广州 510642
  • 收稿日期:2015-03-05 出版日期:2015-06-28
  • 通讯作者: 潘圣刚(1976-),男,河南驻马店人,副教授,博士,主要从事水稻栽培生理研究。
  • 作者简介:陈燕红(1992-),女,广东佛山人,主要从事水稻栽培生理研究。
  • 基金资助:
    国家自然科学基金项目(31471442);教育部新教师基金项目(20124404120009);农业部作物生理生态与耕作重点实验室开放课题项目(201302)

Effects of Physical Restriction in Non Productive Tiller on Root Characteristics and Nutrition Absorption in Rice

CHEN Yan-hong1, TANG Xiang-ru1,2, XIAO Yao1, WU Ying-yi1, DUAN Mei-yang1,2, TIAN Hua1,2, XIAO Li-zhong1,2, PAN Sheng-gang1,2   

  1. 1. College of Agriculture, South China Agricultural University, Guangzhou 510642, China;
    2. Scientific Observing and Experimental Station of Crop Cultivation in South China, Ministry of Agriculture, Guangzhou 510642, China
  • Received:2015-03-05 Published:2015-06-28

摘要: 为了研究抑制无效分蘖对不同基因型水稻根系特征及养分吸收积累的影响,以培杂泰丰和粤晶丝苗为材料(分别记为P和Y),通过设计不同的栽插孔穴直径(栽插孔径分别为20,28,35 mm,依次记为D1、D2、D3)限制水稻的无效分蘖,试验采用水培法。结果表明:与D1、D3相比,D2显著提高了水稻培杂泰丰和粤晶丝苗的穗粒数和产量;在幼穗分化期,D2处理水稻培杂泰丰和粤晶丝苗根系根长、根表面积、根系体积以及根尖数和分叉数均明显高于D1处理;D2与D3处理培杂泰丰水稻抽穗期茎鞘P、K含量显著高于D1处理;D2处理抽穗期的钾素积累总量显著高于D1、D3处理;D3处理水稻粤晶丝苗幼穗分化期、抽穗期的氮素积累总量、磷素积累总量和钾素积累总量均显著高于D1处理。相关分析结果也表明,水稻齐穗期的总根长与氮素积累总量和钾素积累总量存在显著的正相关关系,根系的表面积和总体积与氮素、磷素和钾素积累总量均存在显著或极显著的正相关关系,而且,根系的平均直径与磷素积累总量和钾素积累总量也显著正相关。

关键词: 物理限制, 无效分蘖, 水稻, 根系特征, 养分吸收

Abstract: Effects of physical restriction in non productive tiller on root characteristics and nutrient absorption were studied using two rice cultivars,Peizataifeng and Yuejingsimiao,respectively,in a pot experiment with water culture.In this study,physical restrictions were done by designing different transplanting holes which was 20,28,35 mm,denoted as D1,D2 and D3,respectively.Compared to D1 and D3,total grain number per panicle and yield in Peizataifeng and Yuejingsimiao under D2 were significantly increased.Total root length,superficial area,volume,tips and forks at panicle initiation in Peizataifeng and Yuejingsimiao was remarkably higher than that under D2 than D1,respectively.Compared to D1,the content of phosphorus and potassium of stem at heading stage in Peizataifeng was remarkable higher than that under D2 and D3,respectively.Compared to D1 and D3,there was significant increase in total potassium accumulation under D2 at the heading stage in rice.Total nitrogen accumulation and phosphorus accumulation and potassium accumulation was significant higher under D3 than that under D1 at the panicle initiation stage and heading stage in Yuejingsimiao,respectively.Correlation analysis showed that there was significant positive correlation between root length at heading stage and total nitrogen accumulation and potassium accumulation.There was also significant positive correlation between superficial area and volume of rice and total nitrogen accumulation,phosphorus accumulation and potassium accumulation.And it was found that there was remarkable positive correlation between average root diameter and total phosphorus accumulation and potassium accumulation.

Key words: Physical restriction, Non productive tiller, Rice, Root characteristics, Nutrition absorption

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引用本文

陈燕红, 唐湘如, 肖瑶, 吴颖仪, 段美洋, 田华, 肖立中, 潘圣刚. 抑制无效分蘖对不同基因型水稻根系特征及养分吸收的影响[J]. 华北农学报, 2015, 30(3): 163-169. doi: 10.7668/hbnxb.2015.03.028.

CHEN Yan-hong, TANG Xiang-ru, XIAO Yao, WU Ying-yi, DUAN Mei-yang, TIAN Hua, XIAO Li-zhong, PAN Sheng-gang. Effects of Physical Restriction in Non Productive Tiller on Root Characteristics and Nutrition Absorption in Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(3): 163-169. doi: 10.7668/hbnxb.2015.03.028.

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