广西植物
廣西植物
엄서식물
GUIHAIA
2014年
4期
565-569,556
,共6页
灵武长枣%果实发育%结构特征
靈武長棘%果實髮育%結構特徵
령무장조%과실발육%결구특정
Ziziphus jujuba cv.Lingwuchangzao%fruit development%structure characteristic
采用石蜡切片法，研究不同发育时期灵武长枣果实的结构特征。结果表明：(1)缓慢生长期细胞增长缓慢，外果皮细胞5~6层，表皮细胞由1层薄壁细胞构成，呈长矩形或长椭圆形，表皮细胞以内的薄壁细胞不断增生，形成内表皮细胞。果实体积增大伴随着空腔的出现，中果皮维管束数量多；(2)第一次快速生长期细胞增长迅速，表皮细胞排列疏松，中果皮中的空腔增大速度最快，维管束主要分布在靠近外果皮和内果皮的中果皮部位；(3)减缓生长期表皮细胞变成圆形或椭圆形等不规则形状，细胞排列松散，内表皮细胞形状、大小不一，细胞排列疏松。中果皮中的空腔继续增大，维管束数目逐渐减少，但变化幅度较小；(4)第二次快速生长期外果皮细胞层数减少到3~4层，表皮细胞和内表皮细胞难以区分，空腔随着果实体积的增大达到最大，许多细胞单列排成网状结构，形成更大的腔，果皮中的维管束分布最少。在灵武长枣果实发育过程中，不同发育时期的不同部位其果实的形态解剖特征不同。
採用石蠟切片法，研究不同髮育時期靈武長棘果實的結構特徵。結果錶明：(1)緩慢生長期細胞增長緩慢，外果皮細胞5~6層，錶皮細胞由1層薄壁細胞構成，呈長矩形或長橢圓形，錶皮細胞以內的薄壁細胞不斷增生，形成內錶皮細胞。果實體積增大伴隨著空腔的齣現，中果皮維管束數量多；(2)第一次快速生長期細胞增長迅速，錶皮細胞排列疏鬆，中果皮中的空腔增大速度最快，維管束主要分佈在靠近外果皮和內果皮的中果皮部位；(3)減緩生長期錶皮細胞變成圓形或橢圓形等不規則形狀，細胞排列鬆散，內錶皮細胞形狀、大小不一，細胞排列疏鬆。中果皮中的空腔繼續增大，維管束數目逐漸減少，但變化幅度較小；(4)第二次快速生長期外果皮細胞層數減少到3~4層，錶皮細胞和內錶皮細胞難以區分，空腔隨著果實體積的增大達到最大，許多細胞單列排成網狀結構，形成更大的腔，果皮中的維管束分佈最少。在靈武長棘果實髮育過程中，不同髮育時期的不同部位其果實的形態解剖特徵不同。
채용석사절편법，연구불동발육시기령무장조과실적결구특정。결과표명：(1)완만생장기세포증장완만，외과피세포5~6층，표피세포유1층박벽세포구성，정장구형혹장타원형，표피세포이내적박벽세포불단증생，형성내표피세포。과실체적증대반수착공강적출현，중과피유관속수량다；(2)제일차쾌속생장기세포증장신속，표피세포배렬소송，중과피중적공강증대속도최쾌，유관속주요분포재고근외과피화내과피적중과피부위；(3)감완생장기표피세포변성원형혹타원형등불규칙형상，세포배렬송산，내표피세포형상、대소불일，세포배렬소송。중과피중적공강계속증대，유관속수목축점감소，단변화폭도교소；(4)제이차쾌속생장기외과피세포층수감소도3~4층，표피세포화내표피세포난이구분，공강수착과실체적적증대체도최대，허다세포단렬배성망상결구，형성경대적강，과피중적유관속분포최소。재령무장조과실발육과정중，불동발육시기적불동부위기과실적형태해부특정불동。
The structure characteristics in different development stages fruit of Ziziphus jujuba cv.Lingwuchangzao were studied by paraffin section techniques.The results were as foollows:(1)In slow growth period,the cell grown slowly,the exocarp was made up of 5 ~ 6 layers of cells.The epidermises cells constituted of one layer parenchyma cells and they were rectangular or elliptical.The parenchyma cells gradually increased inside the epidermis and formed sub-epidermal cells.The size of cavity appeared when the volume of fruit had been enlarging.The mesocarp had many vascular bundles;(2)The cells grew quickly in the first rapid growth period.The epidermis cells arranged looser.The increasing speed of cavity in the mesocarp was the fastest.The vascular bundles mainly existed in the mesocarp which was near the exocarp and endocarp;(3)The epidermises in step-down growth period were some rounded or elliptical cells and they became looser.The shape and volume of sub-epidermal cells were different and they arranged chaos. The size of cavity continued to increase and the vascular bundle became less and less in the mesocarp;(4)The exo-carp cells reduced to 3~4 layers,epidermis cells and the sub-epidermal cells were difficult to distinguish in the second rapid growth period.The size of cavity gradually increased with the volume of fruit increasing,many cells singly ar-ranged and became a net and finally formed a larger cavity.The number of vascular bundles were the least in the peel. In the course of Lingwuchangzao fruit development,whatever in different development stages or different locations,the morphological anatomical characteristics of fruit were dissimilar.
