江西农业大学学报
江西農業大學學報
강서농업대학학보
ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS
2014年
3期
463-469
,共7页
陈小荣%孙嘉%肖自京%钟蕾%朱昌兰%彭小松%贺晓鹏%傅军如%欧阳林娟%边建民%胡丽芳%贺浩华
陳小榮%孫嘉%肖自京%鐘蕾%硃昌蘭%彭小鬆%賀曉鵬%傅軍如%歐暘林娟%邊建民%鬍麗芳%賀浩華
진소영%손가%초자경%종뢰%주창란%팽소송%하효붕%부군여%구양림연%변건민%호려방%하호화
杂交晚稻%不同产量性能品种%秧苗素质%生长补偿效应%内源激素
雜交晚稻%不同產量性能品種%秧苗素質%生長補償效應%內源激素
잡교만도%불동산량성능품충%앙묘소질%생장보상효응%내원격소
double-season hybrid late rice%different yield capability varieties%seedling quality%growth compensatory effects%endogenous hormone
探讨了杂交晚稻不同产量性能品种苗期秧苗弱化处理后大田期恢复正常管理下分蘖及内源激素动态，产量及其构成因素的差异性，结果表明2个水稻品种低素质秧苗条件下的产量及其构成因素均呈现不同程度下降，超级稻品种五丰优T025和对照品种昌优10号低素质秧苗较正常秧苗产量、单株有效穗数、每穗总粒数、结实率、千粒质量分别下降5．03％和6．97％、12．11％和10．50％、5．84％和7．21％、4．46％和9．0％、2．52％和4．05％；低素质秧苗下，五丰优T025较昌优10号单株茎蘖数上升速度快，苗峰值高，下降更为平缓；2个水稻品种大田倒二叶ABA含量均随生育推进持续升高，ZR含量持续下降，IAA和GA3含量先升后降，抽穗期达峰值；低秧苗素质下五丰优T025各生育阶段ABA含量明显低于昌优10号，ZR含量均明显高于后者；总体上，五丰优T025正常秧苗下各生育阶段IAA和GA3含量高于低素质秧苗，昌优10号则相反；2个水稻品种不同秧苗素质下分蘖盛期至抽穗期生长促进类激素总和（ IAA＋ZR＋GA3）与ABA的比值呈上升走势，后开始下降；2个水稻品种齐穗后生长促进类激素IAA、ZR、GA3与生长抑制类激素ABA的比值均是正常秧苗低于低素质秧苗。双季杂交晚稻秧苗期生理性胁迫-大田恢复解除下反弹性生长补偿能力与品种产量稳定性能密切相关。
探討瞭雜交晚稻不同產量性能品種苗期秧苗弱化處理後大田期恢複正常管理下分蘗及內源激素動態，產量及其構成因素的差異性，結果錶明2箇水稻品種低素質秧苗條件下的產量及其構成因素均呈現不同程度下降，超級稻品種五豐優T025和對照品種昌優10號低素質秧苗較正常秧苗產量、單株有效穗數、每穗總粒數、結實率、韆粒質量分彆下降5．03％和6．97％、12．11％和10．50％、5．84％和7．21％、4．46％和9．0％、2．52％和4．05％；低素質秧苗下，五豐優T025較昌優10號單株莖蘗數上升速度快，苗峰值高，下降更為平緩；2箇水稻品種大田倒二葉ABA含量均隨生育推進持續升高，ZR含量持續下降，IAA和GA3含量先升後降，抽穗期達峰值；低秧苗素質下五豐優T025各生育階段ABA含量明顯低于昌優10號，ZR含量均明顯高于後者；總體上，五豐優T025正常秧苗下各生育階段IAA和GA3含量高于低素質秧苗，昌優10號則相反；2箇水稻品種不同秧苗素質下分蘗盛期至抽穗期生長促進類激素總和（ IAA＋ZR＋GA3）與ABA的比值呈上升走勢，後開始下降；2箇水稻品種齊穗後生長促進類激素IAA、ZR、GA3與生長抑製類激素ABA的比值均是正常秧苗低于低素質秧苗。雙季雜交晚稻秧苗期生理性脅迫-大田恢複解除下反彈性生長補償能力與品種產量穩定性能密切相關。
탐토료잡교만도불동산량성능품충묘기앙묘약화처리후대전기회복정상관리하분얼급내원격소동태，산량급기구성인소적차이성，결과표명2개수도품충저소질앙묘조건하적산량급기구성인소균정현불동정도하강，초급도품충오봉우T025화대조품충창우10호저소질앙묘교정상앙묘산량、단주유효수수、매수총립수、결실솔、천립질량분별하강5．03％화6．97％、12．11％화10．50％、5．84％화7．21％、4．46％화9．0％、2．52％화4．05％；저소질앙묘하，오봉우T025교창우10호단주경얼수상승속도쾌，묘봉치고，하강경위평완；2개수도품충대전도이협ABA함량균수생육추진지속승고，ZR함량지속하강，IAA화GA3함량선승후강，추수기체봉치；저앙묘소질하오봉우T025각생육계단ABA함량명현저우창우10호，ZR함량균명현고우후자；총체상，오봉우T025정상앙묘하각생육계단IAA화GA3함량고우저소질앙묘，창우10호칙상반；2개수도품충불동앙묘소질하분얼성기지추수기생장촉진류격소총화（ IAA＋ZR＋GA3）여ABA적비치정상승주세，후개시하강；2개수도품충제수후생장촉진류격소IAA、ZR、GA3여생장억제류격소ABA적비치균시정상앙묘저우저소질앙묘。쌍계잡교만도앙묘기생이성협박-대전회복해제하반탄성생장보상능력여품충산량은정성능밀절상관。
Yields and their components ,dynamics of tillers and endogenous hormones of hybrid late rice varie-ties under the condition of recovery normal management in the field after weak seedling cultivation in the seedling stage were analyzedT.he results showed that yields and their components of the two varieties all decreased under the condition of the lowquality seedlings ,the yield per unit area of super rice variety WufengyouT 025 and the CK variety Changyou10 decreased by 5.03 and 6.97 per cent,panicles per plant 12.11 and 10.50 per cent,grains per panicle 5.84 and 7.21 per cent,seed-setting rate 4.46 and 9.0 per cent,1000-grain weight 2.52 and 4.05 per cent ,respectively .Under the low seedling quality , the increasing rate of the tillers per plant of Wufengy-ouT025 was larger,the seedlings peak value higher ,and the decreasing of the tillers per plant more gently than those of the Changyou 10.Endogenous ABA in the reciprocal leaf in the field of the two varieties all rose and ZR fell continually along with the growth advance ,IAA and GA3 rose at first then fell and peaked at heading .En-dogenous ABA of WufengyouT 025 at the various growth stages under the low seedling quality was all clearly lower than that of Changyou10,while ZR was higher.Endogenous IAA and GA3 of WufengyouT025 at the vari-ous growth stages under the low seedling quality ware all clearly lower than under the normal condition ,but it was the reverse for Changyou 10 as a whole.The ratio of growth promoted hormones summation IAA+ZR+GA3 by restrained hormone ABA of the two varieties under the different seedling quality presented uptrend from blooming tillers to heading ,then decreased .The ratio of growth promoted hormones IAA ,ZR,GA3 by restrained hormone ABA of the two varieties after fully heading under the normal seedling quality was lower than that un -der low seedling quality .The rebound growth compensatory ability of the variety under the condition of recovery relieve in the field after physiological stress in the seedling stage was tightly related with the yield stable capa-bility of the hybrid late rice varieties .
