标题印度穿心莲属(穿心莲科)若干种花粉和种子形态

IF 0.9 4区生物学 Q4 PLANT SCIENCES

Grana Pub Date : 2021-07-05 DOI:10.1080/00173134.2021.1910726

Dayanand Dalawai, H. N. Murthy

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引用次数: 1

摘要

摘要对产自印度的穿心莲属(穿心莲科)9种植物的花粉和种子进行了光镜和扫描电镜研究。所有物种的花粉均为等极、径向对称和三圆柱状，孔长，卵形蓼为扁球形，扁桃为长球形，针叶蓼为长形，大叶蓼为近长形，细线蓼、细线蓼、粗线蓼和丝毛蓼为分叶圆形至三角形。表面纹饰是双网状的，但有微孔和棘状的顶盖。种子倒卵球形，长圆形，近方形或椭球形。种皮上覆盖有毛，而种皮上覆盖有针叶和蛇毛的刺状突起。针叶穿心莲花粉的整体开孔、长形、双网状顶盖和疣状孔膜等特征支持其属于穿心莲属，而不是印度尼西亚针叶穿心莲属，这一观点一直存在争议。

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Pollen and seed morphology of selected species of Andrographis (Acanthaceae) from India

Abstract Light and scanning electron microscopic studies of pollen and seeds were carried out for nine species of Andrographis (Acanthaceae) from India. Pollen in all species is isopolar, radially symmetric and tricolporate with elongated apertures, oblate-spheroidal in A. ovata, prolate-spheroidal in A. alata, prolate in A. echioides and A. macrobotrys to sub-prolate in A. lineata var. lawii, A. lineata var. lineata, A. paniculata, A. producta and A. serpyllifolia and lobate-circular to triangular amb. Surface ornamentation is bireticulate except in A. alata, which has microperforate and spinulate tectum. Seeds are obovoid, oblongoid, subquadrate or ellipsoid in shape. The seed coat is covered with hair in A. ovata and with echinate protuberances in A. echioides and A. serpyllifolia. The pollen characteristics of A. echioides including the colporate apertures, prolate shape, bireticulate tectum and verrucate aperture membrane are support an inclusion of this species in Andrographis, rather than considering it as Indoneesiella echioides, which has been the subject of much debate.

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来源期刊

Grana 生物-植物科学

CiteScore

2.10

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Grana is an international journal of palynology and aerobiology. It is published under the auspices of the Scandinavian Palynological Collegium (CPS) in affiliation with the International Association for Aerobiology (IAA). Grana publishes original papers, mainly on ontogony (morphology, and ultrastructure of pollen grains and spores of Eucaryota and their importance for plant taxonomy, ecology, phytogeography, paleobotany, etc.) and aerobiology. All submitted manuscripts are subject to initial appraisal by the Editors, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees. All peer review is single blind and submission is online via ScholarOne Manuscripts.