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BREEDING FOR HIGH YIELDING QUALITY RICE FOR GANGETIC PLAINS OF WEST BENGAL

机译：西孟加拉邦花岗岩质高产稻的选育

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Basmati rice, the nature's gift to this sub-continent is well known for its famous aroma, it also possesses excellent cooking and eating qualities, which are mostly lacking in modem high yielding varieties. In order to blend the quality characteristics with high yield, IR 30 was crossed with Basmati 370 and pedigree breeding method was followed up to F_(10)th generation to obtain stable desirable recombinants. Primarily single plant selections w«re done on the basis of grain yieid and grain characteristics. From F_3 generation and onwards disruptive seasonal selection was practiced among the early segregating lines to obtain stable and adaptable recombinants for the Gangetic plains of West Bengal. In disruptive seasonal selection, first crop was raised during normal rice crop season i.e. Kharif season (June to December) and second crop was raised during next season as Bpro/Summer rice (November to April). Finally, 18 stable homozygous recombinant lines were developed. They were evaluated along with two local popular high yielding varieties viz. Satabdi (IET 4786) and Khitish (IET 4094) as check during kharif 2008 and summer 2009. Five lines showed grain ≥ yield in comparison of standard checks. All the breeding lines showed early maturity (112-120 days) similar to the checks. Four lines possess strong pleasant aroma and among them two lines had grain yield equivalent to that of the checks. Nine lines possess extra long slender grains (>7.5 mm grain length and > 3.0 L/B ratio) and rest of the lines belonged to long slender group (> 6.5 mm grain length and > 3.0 L/B ratio).
机译：印度大米是该次大陆自然的礼物，以其著名的香气而闻名，它还具有出色的烹饪和食用品质，而现代高产品种中大多缺乏这种品质。为了将质量特性与高产量融合在一起，将IR 30与Basmati 370进行杂交，并遵循谱系育种方法直至第F（10）代，以获得稳定的理想重组体。主要基于谷物的产量和谷物特性进行单株选择。从F_3代开始，在早期的分离系中进行破坏性的季节性选择，以获得稳定且适应性强的西孟加拉邦恒河平原重组体。在破坏性的季节选择中，第一季作物是在正常稻作季节（即哈里夫季节）（6月至12月），第二季是Bpro /夏稻（11月至4月）。最后，开发了18个稳定的纯合重组株。他们与两个当地流行的高产品种一起进行了评估。 Satabdi（IET 4786）和Khitish（IET 4094）在2008年卡里夫和2009年夏季进行检查。与标准检查相比，五行品系显示谷物≥单产。所有的育种系都显示出与检查相似的早期成熟期（112-120天）。 4个品系具有强烈的令人愉快的香气，其中2个品系的谷物产量与对照的相当。九个品系具有超长的细晶粒（> 7.5毫米长且> 3.0 L / B比），其余品系属于长细组（> 6.5毫米且> 3.0 L / B比）。

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  • 来源
    《Indian biologists》 |2010年第speca期|p.148-151|共4页
  • 作者

    B. K. SENAPATI; G SARKAR;

  • 作者单位

    Bidhan Chandra Krishi Viswavidyalaya,Department of Plant Breeding, P.O. Krishiviswavidyalaya West Bengal - 741 252;

    Bidhan Chandra Krishi Viswavidyalaya,Department of Genetics Faculty of Agriculture, Mohanpur, P.O. Krishiviswavidyalaya West Bengal - 741 252;

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