title: Study of fruit crop varieties' needs in temperature regime of their development phases (on the example of pear varieties)
abstract: Abstract. The ontogeny of fruit crops and varieties is composed of individual morphological cycles, each of which has its own requirements of the temperature regime. One of the most important cycles in the formation of flower buds is the development of archesporial tissue in their anthers during winter-spring development, which, in turn, consists of several stages (phases I, II, III). They require a certain amount of active temperatures for their passage. Their deficiency (or excess) can lead to
journal: Fruit growing and viticulture of South Russia