中国农学通报
中國農學通報
중국농학통보
CHINESE AGRICULTURAL SCIENCE BULLETIN
2013年
12期
35-38
,共4页
边建民%贺浩华%石桓%朱昌兰%彭小松%傅军如%贺小鹏%陈小荣%胡丽芳%欧阳林娟
邊建民%賀浩華%石桓%硃昌蘭%彭小鬆%傅軍如%賀小鵬%陳小榮%鬍麗芳%歐暘林娟
변건민%하호화%석환%주창란%팽소송%부군여%하소붕%진소영%호려방%구양림연
水稻%保持系%穗部性状
水稻%保持繫%穗部性狀
수도%보지계%수부성상
rice%the maintainer lines%panicle related characters
穗部性状是水稻产量的重要构成因子，有关水稻穗部性状的研究一直备受关注。为了深入了解水稻穗部性状，为新品种的选育提供依据，以‘珍汕97B’为对照，对江西省不同时期选育的3个保持系进行了穗长、一次枝梗数、二次枝梗数和穗数测定。结果表明，99B、‘新露B’和146B较对照‘珍汕97B’穗数、枝梗数显著提高，其中穗数、二次枝梗数最为突出,平均增幅分别为13.1%和27.5%。而穗长较对照增减不同，表明江西在保持系选育中较重视穗部性状的选择，多蘖、大穗亲本是选择的重点。相关性分析显示穗数与一次枝梗数和二次枝梗数分别呈极显著或显著正相关，相关系数分别为0.88和0.79，表明穗数在枝梗数形成中起着重要作用，穗数与大穗之间的矛盾可以通过育种选择来打破。而穗长与一、二次枝梗数和穗数呈负相关，相关系数分别为-0.75，-0.43和-0.59。说明穗长与枝梗数和穗数是存在矛盾的，合适的穗长是保证多蘖、大穗的重要条件。
穗部性狀是水稻產量的重要構成因子，有關水稻穗部性狀的研究一直備受關註。為瞭深入瞭解水稻穗部性狀，為新品種的選育提供依據，以‘珍汕97B’為對照，對江西省不同時期選育的3箇保持繫進行瞭穗長、一次枝梗數、二次枝梗數和穗數測定。結果錶明，99B、‘新露B’和146B較對照‘珍汕97B’穗數、枝梗數顯著提高，其中穗數、二次枝梗數最為突齣,平均增幅分彆為13.1%和27.5%。而穗長較對照增減不同，錶明江西在保持繫選育中較重視穗部性狀的選擇，多蘗、大穗親本是選擇的重點。相關性分析顯示穗數與一次枝梗數和二次枝梗數分彆呈極顯著或顯著正相關，相關繫數分彆為0.88和0.79，錶明穗數在枝梗數形成中起著重要作用，穗數與大穗之間的矛盾可以通過育種選擇來打破。而穗長與一、二次枝梗數和穗數呈負相關，相關繫數分彆為-0.75，-0.43和-0.59。說明穗長與枝梗數和穗數是存在矛盾的，閤適的穗長是保證多蘗、大穗的重要條件。
수부성상시수도산량적중요구성인자，유관수도수부성상적연구일직비수관주。위료심입료해수도수부성상，위신품충적선육제공의거，이‘진산97B’위대조，대강서성불동시기선육적3개보지계진행료수장、일차지경수、이차지경수화수수측정。결과표명，99B、‘신로B’화146B교대조‘진산97B’수수、지경수현저제고，기중수수、이차지경수최위돌출,평균증폭분별위13.1%화27.5%。이수장교대조증감불동，표명강서재보지계선육중교중시수부성상적선택，다얼、대수친본시선택적중점。상관성분석현시수수여일차지경수화이차지경수분별정겁현저혹현저정상관，상관계수분별위0.88화0.79，표명수수재지경수형성중기착중요작용，수수여대수지간적모순가이통과육충선택래타파。이수장여일、이차지경수화수수정부상관，상관계수분별위-0.75，-0.43화-0.59。설명수장여지경수화수수시존재모순적，합괄적수장시보증다얼、대수적중요조건。
Panicle is one of the important factors for rice yield improvement, therefore, research works concerning panicle related characters have been paid wide attention. In order to understand the rice panicle traits in depth and provide the basis for new varieties breeding, 3 typical maintainer lines cultivars applied in the production in Jiangxi Province were studied by using‘Zhenshan 97B’as check in this study. The results revealed that, 99B,‘XinluB’and 146B increased significantly for panicle number, primary branch number and secondary branch number. The most pronounced increase were panicle number and secondary branch number, averaged as 13.1%and 27.5%respectively. But the panicle length increased or decreased compared with‘Zhenshan 97B’, which indicated that the researchers pay more attention on panicle related traits in Jiangxi rice maintainer lines breeding program in recent years, more tillering and large panicle was chosen as the focus. Correlation analysis showed that, panicle number was significantly positively correlated with primary and secondary branch number, and the correlation coefficient was respectively 0.88 and 0.79, indicated that panicle number played an important role in branch number improvement and that the contradiction between more tillering and large panicle could be broken through breeding selection. Panicle length was significantly negative correlated with branch number and primary and secondary branch number, and correlation coefficient was respectively-0.75,-0.43 and-0.59, which indicated that there was contradiction between panicle length and branch number and panicle number, therefore the panicle length was an important condition to ensure the more tillering and large panicle formation.
