水、旱栽培条件下杂交稻主要农艺性状和品质性状比较研究  

Comparative studies on agronomic characters and quality characters of hybrid rice under water-and dry-cultivation conditions

作　　者：严洪斌[1] 郭咏梅[1] 宋晶晶[2] 吴云龙[1] 黄平[1] 卢义宣[1] 

机构地区：[1]云南省农业科学院粮作所,云南昆明650205 [2]云南农业大学农学与生物技术学院,云南昆明650201

出　　处：《西南农业学报》2008年第3期552-556,共5页Southwest China Journal of Agricultural Sciences

基　　金：农业部“948”项目(2006-G1);云南省农业科技攻关项目(2006NG03)

摘　　要：选用旱稻不育系沪旱1A与10个水稻恢复系配出的10个杂交组合,设水、旱2种处理种植,研究杂交组合的主要农艺性状和品质性状的差异性。结果表明:相对水栽条件而言,在旱栽条件下的10个杂交组合株高降低,有效穗减少,根长和根粗增加,根数减少;粒长、粒宽、长宽比、直链淀粉含量均值均有不同程度的下降,而垩白率明显增加,说明杂交稻在旱栽条件下品质相对变差。水栽条件下直链淀粉含量略有升高,但变化幅度小,说明在水分胁迫下稻米直链淀粉含量因品种而异。因此,研究水稻的主要农艺性状和品质性状在传统的水栽和旱栽2种环境条件下的变化规律,将对抗旱杂交稻组合的选育有重要指导意义。In this study,10 combinations were obtained by crossing upland rice male-sterile line lu dry 1A with 10 rice r-lines. Under water- and dry-cultivation environments, the difference of main agronomic characteristics and quality characteristics of hybrid combination were studied. The results indicated that, under dry-cultivation, the height of plant, effective ear was reduced, the length and width of root were increased, the amount of root reduced ; grain length, grain width, ratio of grain length/width and gel consistency were reduced at different degree, but chalkiness radio was increased. It indicated that there were the gel consistency difference with varieties under water-cultivation environments. So it was very important for drought-resistant hybrid rice combination breeding to study the change rule of hybrid rices＇ sagronomic characteristics and quality characteristics under water-and dry-cultivation conditions.

关 键 词：杂交稻 水 旱栽培 农艺性状 品质性状 差异分析 

分 类 号：S511.033[农业科学—作物学]