CAJ | 학술논문

[目的]比较10个水稻品种在3个播种期的器官形态和产量形成差别,并利用温度和日照等变量来预测叶片长度和植株高度等形态变化。[方法]通过连续性观察和破坏性取样,获得并分析Takanari、IR72、Sankeiso、CH86、IR65564-44-2-2、Nipponbare、Takenari、Banten、WAB450-1-B-P-38-HB和武香粳9号等10个品种在2002年5月11日、5月22日和6月19日3个播种期,整个水稻生长季节内的详细器官形态和产量形成数据,这些数据包括叶片长度、节间个数、分蘖数、株高和产量等。[结果]每个节位的最大叶片长度在生长早期逐渐上升,后期逐渐下降;品种CH86和Banten叶片长度分别在4个籼稻品种和6个粳稻品种中最长。品种节间个数和株高随着播种期推迟而减少,其中品种CH86的节间个数和株高最大。10个品种中,武香粳9号籽粒产量最大,籽粒产量、穗数、每穗粒数、千粒重,品种间差异显著,其中籽粒产量变化幅度在4358-7443kg ha-1,穗数变化幅度在158-330×104ha-1。该研究中,未发现籽粒产量与分蘖数和株高之间存在直接关联。[结论]利用本研究所获得的数据构建了叶片长度和株高动态变化等经验回归模型,分析了品种间器官形态和产量形成差异,结果将被用于构建更为机理的模型和进行水稻生产调控。
[목적]비교10개수도품충재3개파충기적기관형태화산량형성차별,병이용온도화일조등변량래예측협편장도화식주고도등형태변화。[방법]통과련속성관찰화파배성취양,획득병분석Takanari、IR72、Sankeiso、CH86、IR65564-44-2-2、Nipponbare、Takenari、Banten、WAB450-1-B-P-38-HB화무향갱9호등10개품충재2002년5월11일、5월22일화6월19일3개파충기,정개수도생장계절내적상세기관형태화산량형성수거,저사수거포괄협편장도、절간개수、분얼수、주고화산량등。[결과]매개절위적최대협편장도재생장조기축점상승,후기축점하강;품충CH86화Banten협편장도분별재4개선도품충화6개갱도품충중최장。품충절간개수화주고수착파충기추지이감소,기중품충CH86적절간개수화주고최대。10개품충중,무향갱9호자립산량최대,자립산량、수수、매수립수、천립중,품충간차이현저,기중자립산량변화폭도재4358-7443kg ha-1,수수변화폭도재158-330×104ha-1。해연구중,미발현자립산량여분얼수화주고지간존재직접관련。[결론]이용본연구소획득적수거구건료협편장도화주고동태변화등경험회귀모형,분석료품충간기관형태화산량형성차이,결과장피용우구건경위궤리적모형화진행수도생산조공。
[Objective] The study aimed to compare the difference of organ morphology and yield composition in 10 rice cultivars with 3 sowing date,and to correlate leaf length and plant height with exogenous variables like temperature accumulation and sunshine duration.[Method] Detailed data of organ morphology and yield component were obtained and analyzed through repeated field observations and destructive samplings over the growing season,including leaf length,node number,tiller number,plant height and grain yield of 10 rice cultivars(Takanari,IR72,Sankeiso,CH86,IR65564-44-2-2,Nipponbare,Takenari,Banten,WAB450-1-B-P-38-HB,Wuxiangjing 9) with 3 sowing dates(May 11,May 22,and June 19,2002).[Result] Max leaf length for each node increased at the early growth stage and decreased at the later growth stage.The leaf length of CH86 and Banten was the maximum in 4 Indica cultivars and 6 Japonica cultivars,respectively.Node number and plant height decreased with the later sowing date,and that of CH86 was the maximum.The maximum grain yield was found in Wuxiangjing 9,and the greatest genotypic variation existed in rice yield,panicle number,spikelet per panicle,and grain weight;the grain yield ranged from 4 358 to 7 443 kg ha-1;the panicle number ranged from 158×104 to 330×104 ha-1;no direct correlation between yield,tiller number and plant height was observed in this experiment.[Conclusion] Empirical regression fitting of the resulting data was developed for leaf length and plant height prediction and yield component comparison,which could be used to construct deeper and more mechanistic models or to optimize rice growing conditions.