美丽异木棉花芽分化期形态结构初步研究
+ + Reference: Ceiba speciosa 、 。 , , 10 , , , 。 1~3 4~10 。 : ( )、 ( )、 (1~2 )、 (3~4 )、 (4 )、 (5~6 ) 6 。Keys: ; ; ; S685:A www.taodocs.com + + Reference: Ceiba speciosa 、 。 , , 10 , , , 。 1~3 4~10 。 : ( )、 ( )、 (1~2 )、 (3~4 )、 (4 )、 (5~6 ) 6 。Keys: ; ; ; S685:A www.taodocs.com
:1671-2641(2017)06-0068-05 :2017-11-17 :2017-12-14Abstract: Ceiba speciosa has great ornamental characteristics in variety color and long florescence, which has been widely applied in landscaping. In order to know the characteristics of flower bud differentiation in Ceiba speciosa, which were to guide the relative research on blooming control. In this paper, according to the dimension of flower buds, divided them into 10 stages. And applied the paraffin method, combined with morphological structures character in different stage, to find out the relationship with the flower buds development stage and morphological structures character. During the development of flower bud, the length and width ratio showed declined in early stage(1st~3rd stage) and ascend in 4th~10th stage. And the characters of flower bud differentiation in six periods were showed as below: the predifferentiation period (growing point on the top of branch); the calyx lobe differentiation period (growing point on the top of branch); the formative period of petals (1st~2nd stage); the appurtenance of stamen period and the formative period of ovary (3rd~4th stage); the formative period of gynoecium and androecium (4th stage) and the formative period of ovule (5th ~ 6thstage). www.taodocs.com :1671-2641(2017)06-0068-05 :2017-11-17 :2017-12-14Abstract: Ceiba speciosa has great ornamental characteristics in variety color and long florescence, which has been widely applied in landscaping. In order to know the characteristics of flower bud differentiation in Ceiba speciosa, which were to guide the relative research on blooming control. In this paper, according to the dimension of flower buds, divided them into 10 stages. And applied the paraffin method, combined with morphological structures character in different stage, to find out the relationship with the flower buds development stage and morphological structures character. During the development of flower bud, the length and width ratio showed declined in early stage(1st~3rd stage) and ascend in 4th~10th stage. And the characters of flower bud differentiation in six periods were showed as below: the predifferentiation period (growing point on the top of branch); the calyx lobe differentiation period (growing point on the top of branch); the formative period of petals (1st~2nd stage); the appurtenance of stamen period and the formative period of ovary (3rd~4th stage); the formative period of gynoecium and androecium (4th stage) and the formative period of ovule (5th ~ 6thstage). www.taodocs.com
Key words: Ceiba speciosa; Flower bud differentiation; Development stage; Morphological structure1 Ceiba speciosa, 、 、 , Bombacaceae Ceiba , 、 、 、 [1~2]。 20 70 80 ,90 [3]。 , , , , , , [4~5]。 , , [6]。 , , [7]。 [8] Swida wilsoniana , 5 。 [9] Olea europaea , 。 , , , 。 [10~13], www.taodocs.com Key words: Ceiba speciosa; Flower bud differentiation; Development stage; Morphological structure1 Ceiba speciosa, 、 、 , Bombacaceae Ceiba , 、 、 、 [1~2]。 20 70 80 ,90 [3]。 , , , , , , [4~5]。 , , [6]。 , , [7]。 [8] Swida wilsoniana , 5 。 [9] Olea europaea , 。 , , , 。 [10~13], www.taodocs.com
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