Title: Differentiation of flower bud and deciduous fruit-bearing shoot and its development in Hupingzao jujube cultivar
Abstract: Morphological changes of deciduous fruit-bearing shoots,single flower and inflorescence during their differentiation were observed by using Hupingzao jujube cultivar (Ziziphus jujuba Mill. cv. Hupingzao)as material from the swelling of mother fruit-bearing shoots until their growth ceased. The results showed that the preliminary morphology of the deciduous fruit-bearing shoots has basically differentiated before the buds starting to grow. Meanwhile 7 to 10 leaves may be developed in swelling buds. Further differentation of leaf buds usually depends on the nutrient availablility. Flower buds development commenced just after bud break. Single flower development was ordinally irreversible and needed pass through 5 developmental stages including floral primordium differentiation stage,sepal differentiation stage,petal differentiation stage,stamen differentiation stage and carpel differentiation stage. This process usually lasted for one week. Terminal flower bud differentiated first,and followed the primary and secondary flower buds. Along with the growth of deciduous fruit-bearing shoot flower bud differentitation continued. Usually the flower buds in 1 to 2 basal nodes and acropetal 1 to 5 nodes of deciduous fruitbearing shoot had not compeletely developed,whereas there were plenty of high quality flower buds in middle parts. Once blooming deciduous fruit-bearing shoots ceased to grow, the apices withered up and dropped off when the newest leaf expands.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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