搜索结果: 1-4 共查到“农学 generations”相关记录4条 . 查询时间(0.009 秒)
Occurrence, development and natural enemies of cecidogenous generations of Pemphigus gairi Stroyan (Sternorrhyncha, Pemphigidae)
Pemphigus gairi Populus spp. occurrence development galls enemies Anthocoris minki importance
2015/2/2
The paper deals with the occurrence, development and natural enemies of the cecidogenous aphid Pemphigus gairi Stroyan (Pemphigidae). The aphid abundantly occurred on leaves of Populus nigra and P. ni...
Genetic evaluation of yield and yield components at advanced generations in rapeseed (Brassica napus L.)
Genetic variation heritability genetic advance correlation path analysis
2011/1/12
Three varieties of rapeseed namely Foseto, Option500 and Goliath including F2 and F3 generations (crosses among them) were planted in a complete randomized block design for evaluation of genetic varia...
Long Term Selection for Small Body Weight in Japanese Quail I:Direct Selection Response from 60 to 65th Generations
selection limit body weight small size heritability Japanese quail
2009/7/31
It is important to know the limit of artificial selection for efficient animal production. The aim of this research was to examine whether the selection for small body weight in Japanese quail has rea...
Long Term Selection for Small Body Weight in Japanese Quail II:Changes in Reproductive Traits from 60 to 65th Generations
reproductive traits long term selection small body weight genetic fitness Japanese quail
2009/7/31
Establishment of small body size poultry is an important strategy, which leads to effective management of bird-colonies and less feed consumption. And also it would be a useful experimental tool for ...