共查询到18条相似文献，搜索用时 631 毫秒
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王志安 《中国科学院研究生院学报》1992,30(1):69-72
本文对浙贝Fritillaria thunbergii Miq．(取材于浙江鄞县和舟山)、东贝 F.thunbergii var．
chekiangensis Hsiao et K.C.Hsia和皖贝F.anhuiensis S．C.Chen et S．F.Yin的核型进行了分析比较，
其中东贝和浙贝(舟山)为首次报道．浙贝的核型：取材于浙江鄞县的为2n=24=4m(1sc) l)+4st(1sc)
+16t(1sc)，取材于浙江舟山为 2n=24=2m+2sm+12st(1sc)+8t(2sc)，东贝的核型为
2n＝24=2m+2sm+8st(2sc)+12t(4sc)，皖贝的核型为2n=24=2m+2sm+8st(2sc)+12t(5sc)。3个分类群均属3B核型。 相似文献
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Two new species of the Liliaceae are described from Anhui Province, China. i. e.
Fritillaria qimenensis D. C. Zhang et J. Z. Shao and Lilium anhuiense D. C. Zhang et J. Z.Shao. 相似文献
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In the present paper the genus Eritillaria in Xinjiang is revised. There are altogether
eleven species and four varieties recognized in this region, of which four species and four varietie
are new to science, and one species is new to Chinese flora 相似文献
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藏药材——梭砂贝母组织培养研究 总被引：2，自引：0，他引：2
通过藏药材——梭砂贝母鳞茎培养在NAA和6-BA的不同浓度组合的MS培养基上,利用植物细胞的全能性,经过无菌操作,在一定温度下培养,使其经过细胞分裂、分化可不经低温直接产生愈伤组织并进一步分化成小植株,结果表明梭砂贝母的鳞茎培养在附加以上两种不同浓度及组合的植物激素MS培养基后经过一段时间的培养,其愈伤组织的诱导结果存在明显差异。 相似文献
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Thirteen new varieties of the genus Fritillaria (Liliaceae) are described
trom Xinjiang, China. 相似文献
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本文采用高校液相测定了浙贝母中贝母素甲的含量,固定相为安捷伦C18柱（5μm,4．6mm×250mm）,乙腈-水-二乙胺（65：35：0．03）为流动相,采用蒸发光散射检测器;贝母素甲在50-150μg／ml范围内,呈良好的线性关系。贝母素甲的平均回收率为98．56％,RSD为0．55％（n=6）;此方法明显优于薄层扫描。 相似文献
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本文对安徽南部贝母属的5种植物的核型进行了研究，结果如下：祁门贝母Fritillaria qimenensis
D C.Zhang et J．Z．Shao：2n=24+4Bs=3m+lsm+8st(2sc)+12t(2sc)+4Bs。铜陵黄花贝母F．monantha
Miq．var．tonglingensis S．C.Chen et S．Ｆ．Yin本文报道2个细胞型，细胞型I：2n=24+5Bs=4m+8st
(2sc)+12t(2sc)+5Bs；细胞型II：2n=24=2m+2sm+8st(2sc)+12t(2sc)。窄叶小贝母F.xiaobeimu Y．K．
Yang，J．Ｚ．Shao et M．M．Fang：2n=24=2m+2sm+10st(4sc)+lot。宁国贝母F．ningguoensis S．C.
Chen et S．F．Yin：2n=24=2m+2sm+8st(2sc)+12t。浙贝母F.thunbergii Mig．：2n=24=2m+2sm+8st(2sc)+12t(2sc)。除浙贝母外，其余均是近年发表的新种或新变种，其染色体数目和核型均为首次报道。 相似文献
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本文根据化学成分资料，探讨了百合科贝母属在植物化学分类上的指征，指出5α-cevanine类
异甾体生物碱为该属植物的特征性成分(Characteristic constituents)；从其生源上看，结构中的C13
与C17位应是其生物合成中氮源骈合的结合部位，即可产生C13、C17上双氢反式(如浙贝甲素
verticine、浙贝乙素verticinone)和顺式(如炉贝甲素delavine、松贝甲素songbeinine)两大类型的生
物碱。同时，作者分析了特征性成分在中国分布区内本属植物主要种中的存在状态，结果提示：其存在形式与其相应植物的形态、地理分布有—定的相关性，值得进—步加以深入研究。 相似文献
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文章报道了13种蜘蛛抱蛋属植物的染色体核型，并对属内核型进化规律作了总结。作者认为随体染色体和第1对染色体可以作为本属核型的特征染色体。染色体数目变异与花部式样密切相关。本属植物原始的染色体基数为x=19。此外，对非整倍性变异的主要机制也进行了讨论。 相似文献
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张定成 《中国科学院研究生院学报》1989,27(6):451-453
本文报道了安徽黄山和九华山产草芍药Paeonia obovata Maxim．的校型，两个居群植物的核型
均为k(2n)=2x=10=6m+2sm+2st, 未见随体。它们的最长和最短染色体的比值均为1．47；臂
比大于2的染色体的百分比均为0.2，属Stebbins的2A核型。这说明草芍药种内不同居群植物的染 色体数目和核型都是极其稳定的，而且和芍药属Paeonia内已报道的其它种的染色体数目一致。 相似文献
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Two new species and one new variety of Salix L. from western China,
namcl. S. ludingensis T. Y. Ding et C. F. Fang, S. neoamnematchinensis T. Y.
Ding et C. F. Fang, and S. taoensis Gorz var. leiocarpa T. Y. Ding et C. F.Fang, are reported in this paper. 相似文献
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乌蒙杓兰及其近亲种 总被引：1，自引：0，他引：1
陈心启 《中国科学院研究生院学报》1985,23(5):369-375
In addition to describing a new species, Cypripedium wumengense, as well
as a new variety, C. bardolphianum var. zhongdianense, nomenclatural and taxonomic
notes are made on its allies and the division to which they belong. They are ltrge]y
found in the Hengduan Mountains in southwestern China, characterized by the absence
of bract, havirg lip more or less covered with small wart-like outgrowths, and that as
the capsule matures the scape becomes much elongated. Six species of this group have
hitherto been reported, of which, however, C. ebracteatum and C. nutans are regarded
here as conspecific with C. fargesii and C. bardolphianum respectively. Thus, including
the new taxa described here, it composes five species and one variety: C. bardolphianum
W. W. Sm. et Farrer (var. bardolphianum and var. zhongdianense S. C. Chen), C. mic-
ranthum Franch., C. fargesii Franch., C. margaritaceum Franch. and C. wumengense
S. C. Chen. They are all grouped here into the same section, Sect. Trigonopedium
(Franch.) Pfitz., the oldest legitimate name of this group in the rank of section. 相似文献
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库尔班·尼扎木丁 《中国科学院研究生院学报》1984,22(6):466-468
The karyotypes of 3 species of Ceratoides (C. arborescens, C. ewersman-
niana and C. latens) were studied. The results show that C. arborescens is a diploid,
with karyotype formula 2n=2x=18=16m+2sm, C. ewersmanniana is also a diploid, with
2n=2x=18=14m+4sm, while C. latens is a tetraploid, with 2n=4x=36=24m+12sm. Ac-
cording to the karyotypes, the morphological features and geographical distribution, C.
arborescens seems to be a primitive species and it might have originated in northern
China. C. arborescens and C. ewersmanniana are similar to each other, not only in mor-
phology but also in karyotype, which shows that they are closely related and that C. ar-
borescens might be the progenitor of C. ewersmanniana. The karyotypes of the 3 speciesof Ceratoides are basically identical, with only minor differences. 相似文献
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本文研究了黄枝油杉Keteleeria calcarea Cheng et L．K．Fu．和矩鳞油杉Keteleeria
oblonga Cheng et L. K. Fu. 的核型。 并与江南油杉 K．cyclolepis Flous．和台湾油杉 K.
formosana Mast. 的核型比较，讨论四种油杉核型进化趋势。 黄枝油杉核型公式K(2n)=
24＝16m+8sm;矩鳞油杉核型公式K(2n)=24＝18m+6sm。 黄枝油杉在第1、3、6号
染色体短臂上具次缢痕;而矩鳞油杉在第2、4、6号染色体短臂上具次缢痕。二者均属较对称 的“2A“核型。 四种油杉核型进化趋势是江南油杉→矩鳞油杉→黄枝油杉→台湾油杉。 相似文献
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张志耘 《中国科学院研究生院学报》1986,24(4):297-303
The present paper deals with taxonomic studies on the genera Lathraea
Linn. and Christisonia Gard. (Orobanchaceae) in China. In the genus Lathraea, only a
single species in China, L. japonica Miq., is recongnized in the paper. It occurs in sou-
thern Shaanxi, southern Gansu, southeastern Sichuan, northern Guizhou and northern
Guangdong, also in Japan. L. miqueliana Franch. et Sav., L. chinfushanica Hu et Tang
and L. japonica Miq. var. miqueliana (Franch. et Sav.) Ohwi are treated as new synon-
yms of L. japonica Miq. in this paper.
In the genus Christisonia, the most of collections from China, which were identi-
fied as C. sinensis G. Beck before, are treated as a new synonym of C. hookeri C. B.
Clarke. A few collections of this genus from China, which were mistakenly described
as Gleadovia lepoense Hu snd G. kwangtungense Hu, should be transferred to Christi-
sonia hookeri C. B. Clarke. It is distributed in southeastern and south China, westwards
to the Himalayas. 相似文献