1) improvement order
改良定单
3) modified single cross hybrid
改良单交种
1.
Three full-sibling binary cytoplasmic male sterility(CMS) lines, 11 back-cross binary CMS lines, 10 half-sibling binary CMS lines, 10 CMS lines and 5 restorer lines Nanhui 04, Minghui 86, Fuhui 838, Xianhui 207 and Milyang 46 were chosen to make 50 single cross hybrids(SHs) and 120 modified single cross hybrids(MSHs) by the way of NCⅡ design.
利用3个全同胞型二元不育系、11个回交型二元不育系、10个半同胞型二元不育系和10个亲本纯合不育系,与南恢04、明恢86、辐恢838、先恢207和密阳46等5个不同类型的恢复系,配制了50个单交种和120个不同类型的改良单交种,研究比较了各类改良单交种与普通单交种单株产量的差异以及株高、剑叶长、剑叶宽、主穗长、抽穗期等与群体整齐度关系较为密切性状的变异情况。
4) Modified single cross
改良单交种
1.
The research has been made on several agronomy characters of sister lines and sister crosses S 1 produced by self-breeding from a single plant of each of four materials as well as the characters of single crosses and modified single crosses composed of crossing sister lines and sister crosses with male parents.
对４个不同材料各一个基本株自交产生的姊妹系及其姊妹种、以及由此配成的普通单交种和改良单交种的若干农艺性状进行分析的结果表明：１）利用早代姊妹种（Ｓ２或Ｓ３）进行制种，可以提高制种产量６０％以上，有的材料Ｓ２代姊妹种的制种产量甚至成倍增加。
2.
The best hybrids among the four types--single cross, modified single cross, three way cross and double cross, Adaptable range of each hy- brid in five regions; The order of potentiality of regonal bionomical effect on productivity; The best sort of the same area on different hybrids produ.
应用灰色局势决策分析方法,对河南省当前大面积推广或即将推广的4种类型12个玉米杂交种进行了综合评估,明确了单交种、改良单交种、三交种及双交种中的优良杂交种。
6) Ameliorable fixed method
改良固定法
补充资料：改良
①去掉事物的个别缺点，使更适合要求：～土壤 ㄧ～品种。②改善。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条