1) Tropics subtropics germplasm
(亚)热带种质
2) tropical and subtropical maize germplasm
热带亚热带种质
3) subtropical and tropical species
亚热带种
4) tropical germplasm
热带种质
1.
The main methods,useful practices and important achievements in the germplasm innovation and inbred lines development by(semi-)tropical germplasm in temperate maize growing area were also recommended.
概述了温带地区玉米育种资源狭窄对生产所造成的危害问题,回顾了热带(亚)热带种质的特点及在温带种质改良中所具有的独特优势及限制因素,介绍了热带种质在温带育种应用所采用的主要方法,以及在种质创新与自交系的选育中所进行的有益尝试和取得的重要成就。
2.
A group of tropical and subtropical breeding materials were crossed with inbred lines 5003,Mo17(Ht) and Dan 340 in Shenyang region,then backcrossed, The results indicated that: Not all the tropieas and subtropical germplasm can improve loging ratio of inbred lines.
选用一批热带、亚热带玉米育种材料与沈阳地区常用自交系5003、Mo17Ht和丹340等进行杂交再回交,将其后代进行测交,结果表明:不是所有的热带、(亚)热带种质都能改善自交系的倒伏性;来源不同的热带、(亚)热带种质对改善自交系倒伏性效果不同;同一组合内由于热带血缘所占比例不同,倒伏率的改良效果不同;同一热带、(亚)热带种质对不同自交系的改良效果不同,就本试验而言,对亚热带地区种质改良Reid血缘种质较好,低纬度地区种质改良旅大红骨类群自交系为宜。
3.
As to the breeding method, the exotic germplasms especially like the tropical germplasms and QPM genes were introduced into domestic materials for several times in order to breeding the recycle lines continually from them.
广泛利用外来种质 ,特别是热带种质和优质蛋白种质 ,分次导入国内种质 ,从中连续选二环系。
5) subtropical species
亚热带树种
6) tree species of subtropical broad-leaf forest
亚热带阔叶树种
补充资料：热带
1.赤道两侧南回归线和北回归线之间的地带称"热带"，也叫"回归带"。
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