نتایج جستجو برای: cross pollination success
تعداد نتایج: 659175 فیلتر نتایج به سال:
BACKGROUND AND AIMS In the UK, the flowers of fruit-bearing hedgerow plants provide a succession of pollen and nectar for flower-visiting insects for much of the year. The fruits of hedgerow plants are a source of winter food for frugivorous birds on farmland. It is unclear whether recent declines in pollinator populations are likely to threaten fruit-set and hence food supply for birds. The pr...
Opening frontiers has led in the last two decades to a massive migration of Romanians to Spain and Italy, two countries known to have large areas planted with olives. Romania owns large areas planted with ash forests. Because of cross-reactivity between these two trees belonging to the Oleaceae family and the big allergenic potential of olive pollens, after a number of years of residence in the...
In order to prevent self-pollination in some plants like corn, tomato and cabbage, emasculation of the female line by hand is required, raising costs and labor expenses of seed production. The utilization of naturally occurring cytoplasmatic male-sterility (cms) is a more efficient approach. Mostly correlated with changes in the mitochodrial or chloroplast DNA, in some lines of distinct species...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید