Calcium-Related Physiological Disorders of Plants

摘要: Many ohhe physiological disorders,aftlicting both storage organs, such as fruits, certain vegetables, roots, and young, enclosed leafy structures are related to the Ca content of respective tissues. Improving their normally diminishes occurrence disease. Shear (157) has listed more than 30 Ca-deficiency disorders this list probably will be extended research. in field proceeds. These believed due an inefficient distribution rather POOf. uptake. This problem is illustrated by observation that leaves contain considerably organs or young tissues from same plant ( 19,23, 126). Poor within the.plant can also explain frequent appearance leven on Ca-rich soils failure Ca· fertilization, although often not done (123), solve problem. received considerable attention recent years only because its relationship but other desir­ able effects, particularly fruits where it reduce respiration 13, 26), delay ripening 155), extend life increase firmness 40) vitamin C 12), rot 155). The continued in­ crease interest effects different processes plants well uptake indicated some international symposia subject. reports these sym­ posia, together with comprehensive reviews, cover a great deal relevant literature (28, 3 1, 33, 49;, 52, 57, 70, 80, 108, IB, f57, 203).