Li Rongtian,Xu Jinxing,Cui Chenghuan.Varietal Difference in The Percentage of Ripened Grains of Japonica Rice and Its Relation to The Heading Date in Heilongjiang Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2000,(02):4-7.[doi:10.11942/j.issn1002-2767.2000.02.0004]
黑龙江省不同粳稻品种结实率差异及其和抽穗期的关系
- Title:
- Varietal Difference in The Percentage of Ripened Grains of Japonica Rice and Its Relation to The Heading Date in Heilongjiang Province
- 文章编号:
- 1002 -2767(2000)02 -0004 -04
- Keywords:
- Japonica rice ; Variety ; Percentage of ripened g rains ; Heading date ; Heilong jiang province
- 分类号:
- S511 .22
- 文献标志码:
- A
- 摘要:
- 选用黑龙江省目前典型高产粳稻品种和新育成的超高产有望品系, 在哈尔滨的高产栽培条件下进行了田间试验, 比较了供试品种结实率差异, 分析了结实率和抽穗期关系。结果表明结实率品种间差异极显著。各品种穗上部结实率>中部>下部。但结实率具有整穗性, 在较高结实率范围内穗中、下部位子粒结实好坏影响了整穗结实率高低。结实率是黑龙江省目前水稻实现超高产首要限制因素, 适当提早品种抽穗期有利于提高结实率。讨论后提出黑龙江省水稻超高产育种应重视对大粒特性的利用。
- Abstract:
- The field ex periments using 12 current ly typical high y ielding variet ies or possibly super high yielding strains developed recently f rom the Heilongjiang Province were conducted under the high y ielding cultvation in Harbin .The varietal dif ference in the percentage of ripened g rains of tested varieties w as compared , and the relat ionship betw eet percentage of ripened g rains and the heading date w as analysed .The result s indicated that there w as signif icant dif ference in the percentage of ripened g rains of the tested varieties .The percentage of ripened g rains on the upper panicle w as higher than that on the middle w hich w as higher than that on the lower part .The percentage of ripened grains of the w hole panicle w as af fected by the ones on the middle and low er part s in the high range of the percentage of the ripened grains , and the variety wi th hig h percentage of ripened g rains based on each part of panicle .The percentage of ripened grains w as currenthy the f irst limitation to the rice super high y ield in Heilongjiang Province .Earlier heading date w as helpful to high percentage of ripened grains. Based on the discussion , i t w as put forw ard that we should pay more at tent ion to the g rain weight in the case of super high yielding breeding in Heilong jiang Province .
参考文献/References:
[ 1] 张矢主编.黑龙江水稻.黑龙江科学技术出版社, 哈尔滨, 1998 , 7395 , 344351
[ 2] 杨守仁.水稻高产栽培及高产育种论丛.农业出版社.北京, 1990
[ 3] Kumura , A .Science of The Rice Plant , Vol.2 , Physiology . Food and Agriculture Policy Research Cen ter, Tokyo:1995 , 704- 736
[ 4] Suzuki , Y., et al.Seasonal changes of GA1, GA10 and absci sic acid in three rice cult ivars .Plant & C ell Physiol., 1981 , 22 : 10851093
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备注/Memo
收稿日期:1999 -11 -13
作者简介:李荣田(1964 -), 男, 农学博士, 副教授, 从事水稻遗传育种和栽培研究。