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落瓣油茶染色体核型的分析 总被引:2,自引:0,他引:2
<正> 山茶属植物约220种,其中报道过:染色体计数的约50种,报道过染色体核型的近10种。作者继浙江红山茶(Camellia chekiangoleosa Hu)、南山茶(C.semiserrata Chi)、白花南山茶C.semiserrata var.albiflora Hu et Huang)和茶梨C.octopetala Hu)之后,对落瓣油茶(C.kissii Wall.)进行染色体计数和核型分析,旨在为油茶育种工作和探索山茶属内的系统发育提供细胞学资料。 相似文献
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南山茶Camellia semiserrata Chi染色体核型的分析 总被引:4,自引:0,他引:4
<正> 引言 南山茶(Camellia semiserrata Chi)又名广宁红花油茶,属山茶属(Camellia L.)山茶亚属(Subg.Camellia)红山茶组(Sect.Camellia),分布于我国广东和广西。南山茶的种子油可供食用,为我国南方主要油料经济树种之一,花红色,形大而艳丽,可供观赏。 山茶属植物约共二百种,但已做过染色体计数者仅47种,做过核型分析者则不超过10种。本文提供的南山茶染色体核型的资料将有助于山茶属植物的遗传育种工作和属内系 相似文献
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Palynology of South Indian Zingiberaceae 总被引:1,自引:0,他引:1
JOSE K. MANGALY JYOTHI NAYAR 《Botanical journal of the Linnean Society. Linnean Society of London》1990,103(4):351-366
MANGALY, J. K. & NAYAR, J. 1990. Palynology of South Indian Zingiberaceae. Light microscope studies on pollen morphology of 21 Old World, tropical taxa of Zingiberaceae reveal that an exine is absent only in Kaempferia . A discontinuous exine layer consisting of circular plates joined together at margins occurs in Alpinia galanga and Amomum hypoleucum while all other taxa possess an uninterrupted exine layer which is commonly 0.7 μm to less than 2.0 μrn thick (3.2 μm in Zingiber zerumbet , 2.5 μm in Amomum hypoleucum ). Exine is spinose in Alpinia (smooth in Alpinia sanderae ), Amomum and Boesenbergia , verrucose in Eleltaria , tuberculate to areolate or striate in Zingiber , papillose in Globba and smooth or nearly so in Curcuma, Costus and Hedychiurn . Pollen grains are spheroidal, 50–90 μm in size (35 μm in Globba ophioglossa ), and inaparturate (foraminate in Costus ), except in Curcuma and Zingiber where they are ovoid to ellipsoidal, 70–135 times 60–80 μm in size and sulcate. A lamellated intine, much thicker than the exine, occurs in all, and it is thinner at the apertural region in Curcuma, Costus and Zingiber; in Elettaria and Hedychiurn it is thinner in one or few large scattered circular areas, and in Boesenbergia and Alpinia zerumbet on one side of the grains. Palynologirally Alpinia, Amomum, Boesenbergia, Kaempferia and Zingiber constitute one group while Elettaria, Hedychiurn and Costus constitute another. 相似文献
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Liang Yuan-Hui 《植物分类学报:英文版》1988,26(4):265-281
Pollen morphology of 89 species and 3 varieties belonging to 18 genera (out of
150 spcies in 20 genera) of Zingiberaceae in China was studied under both light microscope
and scanning electron microscope.
Pollen grains of Zingiberaceae are spherical, subspherical, ovoid and prolate, 36-225 μm
in size, nonaperturate or aperturate (spiraperturate, porate). Pollen grains are almost not
resistant to acetolysis. The wall is composed of a very thin exine and a thick intine. The
exine is psilate, spinate, cerebelloid-areolate, striate, verrucate and foveolate.
According to the presence or the absence of aperture and differential ornamentations, two
types and six subtypes are recognized:
I. The type Nonaperturate: (85 species and 3 varieties in 18 genera). Four subtypes can
be recognized within the type based on the characteristics of the exine sculpture. These are:
(1) The subtype Psilate, in which, the exine is nearly smooth (including: Hedychium, Curcuma, Kaempferia, Caulokaempferia coenobilis, Boesenbergia rotunda, Stahlianthus, Amomum compactum, Etingera, Hornstedtis, Rhynchanthus). (2) The subtype Spinate, which comprises two
groups: (A) The group Short-spinate, pollen grains with smaller spines (Globba), (B) The
group Long-spinate, pollen grains with longer spines (Alpinia, Amomum, Plagiostachys, Roscoea, Cautleya, Boesenbergia fallax, Caulokaempferia yunnanensis). (3) The subtype Cereblloid-areolate, pollen grains of which are spherical or subspherical, with cerebelloid sculpture
(Zingiber Sect. Zingiber). (4) The subtype Striate, pollen grains of which are prolate or oliveshaped, and striate (Zingiber Setc. Cryptanthium).
II. The type Aperturate, in which pollen grains are acetilysis-resistant and possess distinct apertures (mixed colpate-porate or forate), including two subtypes: (1)The subtype Mixed
colpate and Porate. Pollen grains are both 3-colpate and 1-3-porate, and usually with one
long spiral, two short (straight or slightly curved) colpi and 1-3-poris. The exine is verrucate
or not, nearly sinuolate (Costus speciosus, C. tonkinensis, C. lacerus). (2) The subtype porate,
whose grains are 6-8-porate and exine is foveolate (Costus megalobractea).
The taxonomic significance of the pollen types in the family Zingiberaceae is also discussed. 相似文献
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Tong Shao-Quan 《植物分类学报:英文版》1989,27(4):277-292
Twelve new species of Zingiberaceae are described from Yunnan
Province, China. They are Amomum fragle S. Q. Tong, A. quadrato-laminare S.
Q. Tong, A. verrucosum S. Q. Tong, A. glabrum S. Q. Tong, A. capsiciforme S.
Q. Tong, A. coriandriodorum S. Q. Tong, Alpinia rubromaculata S. Q. Tong, A.
emaculata S. Q. Tong, Zingiber nigrimaculatum S. Q. Tong, Hedychium glabrum
S. Q. Tong, Costus viridis S. Q. Tong and Costus oblongus S. Q.Tong. A key to
species of the genus Costus is given at the end of text. 相似文献
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光叶云南草蔻的植物分类学研究 总被引:3,自引:0,他引:3
作者在调查云南草蔻及光叶云南草蔻资源时发现,过去在云南、广西和广东被定为光叶云南草蔻的植物为三种不同的山姜属植物,从中分出两新种:那坡山姜Alpinia napoensis H.Dong et G.J.Xu和卵果山姜 Alpinia ovoidocarpa H.Dong et G.J.Xu,并对光叶云南草蔻作了形态特征补充描述。查清光叶云南草蔻Alpinia blepharocalyx K.Schum.var.glabrior(Hand.-Mazz.)T.L.Wu仅分布云南南部及东南部,广西、广东无分布。 相似文献
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Pyrgophyllum (Gagnep.) T. L. Wu et Z. Y. Chen is a monotypic genus of Zingiberaceae from China. Originally, it was placed in Kaempferia as a subgenus by Gagnepain (1901),
later transferred to Camptandra by Schumann (1904) and to Caulokaempferia by R. M. Smith.
(1972).
In this paper, the authors suggest that the separation of Pyrgophyllum at generic rank is
justified on cytological, morphological and anatomical evidence. It is characterised by the large
lamina-like bracts, which are rarely seen in Zingiberaceae. The margin of each bract is adnate to the main axis of the inflorescence at the base and the lip is lobed. Trichomes unicellular, stomata each with 4-7 lateral subsidiary cells, lateral veins are of three various types of
vascular bundles: girder-shaped, semigirder-shaped and isolated. The pollen grains are spinecent.
The basic chromosome number (x) is 21.
The type species, Pyrgophyllum yunnanensis (Gagnep.) T. L. Wu et Z. Y. Chen (Kaempferia yunnanensis Gagnep.), is only distributed in Yunnan and Sichuan provinces of China. 相似文献