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Morphology, Biology and Fertility of Flowers in Temperate Zone Fruits
註釋The same team of authors presents the third volume on the topic of fruit growing in the moderate climate zone with special respect to blooming and fruit set. Accumulated and critically processed knowledge has been synthesised with up to date references. In the first chapter, blooming phenology and attributes of flowers are dealt with along with a historical survey of earlier investigations in flower morphology and in the process of fertilisation. Subsequent chapters go into details revealed by modern biological research concerning special morphological and physiological characters of flowers, the ecological conditions of flower bud formation and bud bursting with special reference to different types of winter dormancy. The excessive weather conditions aggravated by the global meteorological changes of our climate actualise the defence practices against frost and drought. The anomalies are also coupled with the changes in the pathological conditions as well as in the incidence of pests, hurting first of all the delicate structures of the reproductive mechanism, which ought to be traced currently. A wide reaching field of horticultural research since about one century, the fertility relations of temperate zone fruit species yielded a considerable bulk of information concerning the mutual compatibility relations of varieties. Modern growing technologies increased the significance of the respective knowledge, which has been completed with new elements derived by methods of classic and molecular genetics and biochemistry. Also new mutants appeared, which represent often changes in their reproductive properties. Varieties used as understocks are also treated as for their floral biology. Fruit set and fruit drop are treated with special emphasis in relation with seed content being a decisive moment of yield. Molecular biology represents a safe tool for the identification of varieties and genotypes in order to secure the proper association of inter-compatible varieties in plantations.