异叶苦竹胚和胚乳的发育及淀粉粒动态

doi:10.11707/j.1001-7488.20110906

Abstract

Abstract:

The development of embryo and endosperm of Arundinaria simonii f. heterophyllus was studied by means of paraffin section.And the accumulation dynamics of starch grains were observed by PAS reaction. The results were as follows: The zygote had a dormant for 5 days. The development of embryo belongs to graminad type . There are some stages during the development of embryo, including the stage of 2-cell proembryo, multicellular proembryo, globular proembryo, pyriform proembryo, differential embryo and mature embryo. The mature embryo is composed of radicle, coleorhiza, plumule, coleopt ile, scutellum and epiblast. The development of endosperm belongs to nuclear type. It includes three successive stages, which are free endosperm nucleus stage, cellularization stage and mature stage. Starch grains began accumulating around nuclear,16 days after pollination. Finally it filled the whole endosperm.

Key words: Arundinaria simonii f. heterophyllus, embryo, endosperm, PAS reaction

CLC Number:

S718.43

Lin Shuyan;Liu Guohua;Ding Yulong. Accumulation Dynamics of Starch Grains and the Development of Embryo and Endosperm in Arundinaria simonii f. heterophyllus[J]. Scientia Silvae Sinicae, 2011, 47(9): 33-35.

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Accumulation Dynamics of Starch Grains and the Development of Embryo and Endosperm in Arundinaria simonii f. heterophyllus

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