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西藏新绿藻   总被引:1,自引:0,他引:1  
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本文分析了125份柑桔属、枳属、金柑属和指来檬属种质资源的谷氨酸草酰乙酸转氨酶同工 酶(GOT)。新发现了GOT-1的两个等位基因B和C。宽皮柑桔的GOT同工酶颇为一致(仅两个例 外),表明可能有共同的起源。酸橙的GOT同工酶较复杂,可能有多种起源,其中朱栾和小红橙的起 源可能与宜昌橙或香橙有关。在单胚种柚中发现了6种GOT基因组合。宜昌橙存在着两种GOT同工酶类型。本文讨论了甜橙、酸橙、葡萄柚、香橙、柠檬等种类的可能起源。  相似文献   

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广东竹亚科新分类群   总被引:1,自引:0,他引:1  
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  在本文中描述了乌头属和翠雀属各一新种和一新亚种,唐松草属一新种,侧金盏花属一新亚种,以及毛茛属五新种,首次报道了圆叶唐松草在中国西藏南部的分布,在对叶、雄蕊和心皮的形态特征进行了分析之后认为,这种植物与特产云南的糙叶唐松草有一定亲缘关系。  相似文献   

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在修订和编写《中国植物志)英文版过程中,依据标本材料(主要是模式标本)和文献考证,对蔷薇科一些属的种进行了修正,并发表了新组合和两个新变种。  相似文献   

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This paper, which consists of a part of pertinent data obtained through a cri- tical revision of the genus Lonicera of China. discusses 28 noteworthy species and infra- specific taxa. Among them, 3 subspecies and 1 variety are new grades and combinations. Be-sides, 31 species, 11 varieties and 6 forms have been reduced to synonyms.  相似文献   

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本文是对菊科莴苣属Lactuca L. 的分类订正, 文中起用了乳苣属Mulgedium Cass.和山   莴苣属Lagedium Sojak两个较老的属名, 建立了二个新属,即翅果菊属Ptrocypsela Shih与假   福王草属Paraprenathes Chang. 文末提供了莴苣属及邻近属以及东亚地区的有关种类的分属分种检索表。  相似文献   

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柑桔植物的数值分类学研究   总被引:1,自引:0,他引:1  
本文用系统聚类法和对应分析法对59份柑桔及其近缘植物枳和金柑三个属的分类群进行了数值 分类学研究。  结果表明,在栽培柑桔中,枸橼Citrus medica、柚Citrus grandis、宽皮柑桔Citrusreticulata是三大基本类型。  本文还对些种类的分类地位作了探讨。  相似文献   

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中国鼓藻目新资料   总被引:1,自引:0,他引:1  
本文报道浙江省东钱湖和西湖鼓藻目8个属的1个新种、3个新变种、20个中国新记录种及变种。  相似文献   

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综合研究凤头黍属与其邻近属的叶片表皮微形态、颖片及内、外稃等特征后,发表禾本科一新属——刺毛头黍属。  相似文献   

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采自横断山地区的15个新分类群为:芽状凹顶鼓藻小齿变型,无球孢鼓藻近头状变种,多佛鼓藻 泉生变种,窝孔鼓藻,四川鼓藻,近丹麦鼓藻颗粒变种,近壮丽鼓藻,西藏鼓藻乳突变种,雅鼓藻隆 起变种,云南鼓藻,弹丝角星鼓藻超群变种,长突起角星鼓藻基刺变型,伪西博角星鼓藻密聚变种退化变型,西博角星鼓藻纹饰变种具刺变型,索塞角星鼓藻具刺变型。  相似文献   

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After having examined all specimens of the genus Prenanthes L. of Compositae in the Herbarium of Institute of Botany, Academia Sinica, I find that the classic concept on the genus Prenanthes established by G. Bentham in 1873 has not been held exactly by some of Euro- pean, American, Japanese and Chinese botanists. For example, W. B. Hemsley, S. T. Dunn, A. Franchet, S. Kitamura and C. C. Chang placed plants from China which belong to other groups into the genus; I also find that the classic concept of the genus is not clear.  The present paper makes a revision not only on the classic concept of the genus, but also on its concept assumed by the above-mentionded botanists.      With the combination of numerous (25-35), white or yellow ligular florets, numerous ribs of achenes, Prenanthes alba L. (Nabalus albus (L.) Shih, comb. nov.) is distinctly different from Prenanthes purpurea L., which has the combination of purple, few (5-15) ligular flo- rests and few ribs of achenes.  Nabalus Cass., as a genus established early (1825) by H. Cassini, should be restored.  It is not reasonable to treat Nabalus as a subgenus (E. B. Babcock et al. 1947) or a section (S. Kitamura, 1956) or as a synonym (G. Bentham, 1983) of the genus Preanathes L.       The present author recognizes seven species in the new revised genus  Prenanthes L.  in China, 4 of which are described as new.  In the genus Nabalus Cass.  only one species, N. ochroleuca Maxim., is distributed in Northeast China.       As Lactuca melanantha Franch. (1895), Prenanthes henryi Dunn (1903), P. glandulosa Dunn (1903), Lactuca triflora Hemsl. (1888) (it was transferred to Prenanthes L. by C. C. Chang in 1934), Prenanthes formosana Kitam. (1934) and P. wilsoni Chang (1934) all have campanulate involucres, purple phyllaries, purple dorsi-ventrally compressed achenes, longitu- dinal rids 6-9 on each side of achene truncate and beakless at its apex and pilose tubes of co- rollae, they should be placed neither into the genus Prenanthes with obtusely tri-or pentagonous, subterete achenes and glabrous tubes of corollae, nor into the genus Lactuca with beak achenes. Besides the above-mentioned species misnamed by some of foreign and Chinese botanists, 6 other species also have the same structure in achenes and corollae.  Evidently, they fall into a new genus with the name Notoseris Shih.       The new genus Notoseris Shih of the tribe Lactuceae of Compositae seems to be more re- miniscent of Lactuca L. than of Prenanthes L. emend.       All the 12 species of the genus Notoseris Shih are endemic to China and distributed in the area of south of Yantze River. Of them 6 are new combinations and 6 are described as new.  相似文献   

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本文报道了我国产水鳖科植物5属9种染色体数目和核型,发现所有种都是二倍体,它   们的核型大部分是由中部着丝点(m)和近中部着丝点(sm)组成,少数种具有近端着丝点  (st)。它可以区分为4种核型:1A,2A和1B,2B。水筛属是原始的,黑藻属是进化的。  相似文献   

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百合科六属十五种植物的细胞学研究   总被引:2,自引:0,他引:2  
本文对云南西北部百合科6属15种的染色体和核型进行了报道。 (1)Clintonia udensis Trautv.et Mey间期核属于浓密分散型,前期染色体属于渐变型,分裂中期体细胞染色体2n=14=8m+4sm+2st(2SAT),核型不对称性属于2A型;(2)鹿药属四个种间期核属于复杂中央微粒型,前期染色体属于中间型,分裂中期体细胞染色体分别为Smilacina henryi(Baker)Wang et Tang,2n=36=12m+16sm+6st+2t(2SAT),  核型不对称性属于2C型;Smilacina fusca Wall., 2n=36=14m(2SAT)+12sm+10st(2SAT),  核型不对称性属于2B型;  Smilacina tatsienensis(Franch.)Wang et Tang,  2n=36=22m+2sm+2st(2SAT),  核型不对称性属于2C型;Smilacina atropurpurea(Franch.)Wang et Tang,2n=36=18m+6sm(2SAT)+12st,核型不对称性属于2C型;(3)黄精属四个种的间期核属于复杂中央微粒型,前期染色体属于中间型,分裂中期体细胞染色体分别为Polygonatum kingianum Coll.et Hesml.,2n=30=12m(2SAT) +6sm+lst+2t,  核型不对称性属于2C型;  Polygonatum cirrhifolium(Wall.)  Royal,2n=30=10m+4sm+12st+4t,  3C型;  Polygonatum  curvistylum  Hua,  2n=78=24m(2SAT)+14sm(6SAT)+40st,  核型不对称性属于3C  型;  Polygonatum  cathcartii  Baker,2n=32=12m+6sm+10st+2t+2bs,核型不对称性属于2C型;(4)百合属,假百合属,豹子花属三个属的间期核和前期染色体形态相似,都属于复杂中央微粒型,前期染色体属于中间型,分裂中期体 细胞染色体分别为Lilium  henricii Franch,2n=24=2m(2SAT)+2sm+10st+10t,核型不对称性属于3A型;Lilium bakerianum Coll.et  Hesml.var.  rubrum  Stearn,    2n=24=4m  (2SAT)+10st+10t(2SAT),核型不对称性属于3A型;Nomocharis bilouensis Liang 2n=24=2m(2SAT)+2sm+12st+8t,核型不对称性属于3A型;Nomocharis pardanthina Franch.,2n=24=4m(2SAT)+12st (2SAT)+8t,核型不对称性属于3A型;Nomocharis sauluensis Balf, f.,2n=24=4m(2SAT)+10st(2SAT)+10t,核型不对称性属于3B型;Notholirion campanulatum Cotton et Stearn2n=24=2m(2SAT)+2sm+14st(2SAT)+6t,核型不对称性属于3A型。  相似文献   

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The present paper is part of taxonomic study on Chinese Phyllanthoideae. Inclu- ded in it are two new varieties, Leptopus esquirolii var. villosus and Drypetes hainanensis var. longistipitata, one new combination, Glochidion triandrum var. siamense, and seven new re- cords in China: Drypetes salicifolia, D. hoaensis. Actephila subsessilis, Glochidion khasicum, G. nubigennum, Bridelia spiosa and B. poilanei.  In addition, seventeen taxon names are new- ly reduced: Liodendron formosanum = Drypetes formosana, Liodendron matsumurae = Dry- petes matsumurae, D. longipes = D. indica, Antidesma paxii = A. acidum, A. hiiranense, A. filipes and A. pentandrum var. hiiranense = A. japonicum, A. calvescens = A. montanum, A. microphyllum = A. venosum, Breynia stipitata var.  formosana and B. jormosana  =  B. vitis-idaea, Glochidion zeylanicum var. tomentosum = G. hirsutum, G. rubidulum = G. thom- sonii, G. acuminatum = G. triandrum, G. fagifolium and Phyllanthus fagifolius = Gloc- hidion sphaerogynum, Bridelia penangiena = B. insulana, B. henryana = B. tomentosa.  All the types are kept in SCBl and PE.  相似文献   

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