共查询到11条相似文献,搜索用时 17 毫秒
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通过野外调查和查阅大量标本、文献,对江西猕猴桃属植物的分布和区系特征进行了系统研究。江西省境内分布有猕猴桃属植物20种和11变种(或变型),其中葛枣猕猴桃(Actinidia polygama (Sieb.et Zucc.)Maxim.)、灰毛猕猴桃(A.cinerascens C.F.Liang)、楔叶猕猴桃(A.fasciculoides var. cuneata C.F.Lang)和簇花猕猴桃(A.fasciculoides C.F.Liang)为江西新分布。江西猕猴桃属植物区系特征表现在:(1)种类丰富;(2)特有现象较明显;(3)多型性突出;(4)地理成分复杂,以中国特有分布式样为主;(5)种间、种内分化较强烈;(6)与邻近地区猕猴桃属植物的关系密切。还对江西猕猴桃属植物的分布与自然生境的关系进行了探讨。 相似文献
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以猕猴桃属中华猕猴桃(Actinidia chinensis)32个品种和1个种间杂交后代群体为研究对象,对猕猴桃属植物叶片与果实维生素C含量的相关性进行了研究。结果表明,在中华猕猴桃种内水平上,幼果与成熟果实的果肉维生素C含量间存在极显著的正相关关系;在种间杂交后代群体中成熟叶片和成熟果实的维生素C含量存在极显著正相关关系,为利用早期相关性状开展猕猴桃育种的可行性提供了理论依据。此外,对15个常见中华猕猴桃品种的果实维生素C含量进行了多重比较,为人工杂交时的亲本选择提供了依据。 相似文献
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猕猴桃Actinidia spp原产我国,大都为野生落叶藤本果树。全世界约有54个种,其中我国有52种,38个变种和4个变型,有经济价直的9个种。猕猴桃因其果形优美,花果清香,营养丰富,又富含维生素丙(参见表1,2)。猕猴桃还具有一定的医疗保健效用,故已成为目前世界上新兴的栽培果树,西欧,美、加、新西兰等国均已广泛开发栽培,其中尤以新西兰最为突击,该国的产品几乎垄断国际猕猴桃产品市场。据该国有关部门 相似文献
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Diana Pinto Stefania Sut Stefano Dall'Acqua Cristina Delerue-Matos Francisca Rodrigues 《化学与生物多样性》2021,18(3):e2000925
Hardy kiwifruit (Actinidia arguta) is a highly appreciated exotic fruit endowed with outstanding bioactive compounds. The present work proposes to characterize the pulp from A. arguta organic fruits, emphasizing its radicals scavenging capacity and effects on intestinal cells (Caco-2 and HT29-MTX). The physicochemical properties and phenolic profile were also screened. The total phenolic and flavonoid contents (TPC and TFC, respectively) of pulp were 12.21 mg GAE/g on dry weight (DW) and 5.92 mg CE/g DW, respectively. A high antioxidant activity was observed (FRAP: 151.41 μmol FSE/g DW; DPPH: 12.17 mg TE/g DW). Furthermore, the pulp did not induce a toxic effect on Caco-2 and HT29-MTX cells viability up to 1000 μg/mL. Regarding in vitro scavenging capacity, the pulp revealed the highest scavenging power against NO. (IC50=3.45 μg/mL) and HOCl (IC50=12.77 μg/mL). These results emphasize the richness of A. arguta fruit pulp to be used in different food products. 相似文献
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Jaehak Lee Kandhasamy Sowndhararajan Mihae Kim Jaehun Kim Daeho Kim Sunpyo Kim Gur-Yoo Kim Songmun Kim Jin-Woo Jhoo 《Saudi Journal of Biological Sciences》2014,21(6):532-538
In traditional systems of medicine, fruits, leaves, and stems of Actinidia arguta (Sieb. et Zucc.) Planch. ex Miq. have been used to treat various inflammatory diseases. The present study determined the proximate composition, antioxidant, anti-inflammatory, and hypoglycemic potential of A. arguta stem. Phenolic composition of hot water extract and its sub-fractions was determined by Folin–Ciocalteu’s reagent method. In vitro antioxidant activities of the samples were evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging assays. Anti-inflammatory activity of different fractions was investigated through the inhibition of nitric oxide (NO) production in lipopolysaccharide (1 μg/ml) stimulated RAW 264.7 cells. In addition, inhibition of α-glucosidase activity of hot water extract was determined using p-nitrophenyl-α-d-glucopyranoside (pNPG) as a substrate. Ethyl acetate (557.23 mg GAE/g) fraction contains higher level of total phenolic content. The antioxidant activity evaluated by DPPH radical scavenging assay showed a strong activity for ethyl acetate (IC50 of 14.28 μg/ml) and n-butanol fractions (IC50 of 48.27 μg/ml). Further, ethyl acetate fraction effectively inhibited NO production in RAW 264.7 cells induced by lipopolysaccharide (LPS) than other fractions (nitrite level to 32.14 μM at 200 μg/ml). In addition, hot water extract of A. arguta stem exhibited appreciable inhibitory activity against α-glucosidase enzyme with IC50 of 1.71 mg/ml. The obtained results have important consequence of using A. arguta stem toward the development of effective anti-inflammatory drugs. 相似文献
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猕猴桃属植物Actinidia spp,自然分布于中国的亚热带地区。对萼猕猴桃A.valvata的花芽受Pseudasphond ylia 瘿蚊属一未知种的寄生而形成花芽虫瘿,这种花芽瘿由于近年来在制药工业上的应用而受到重视。在中国中南地区研究对萼猕猴桃—瘿蚊的相互关系过程中,我们的记载表明该造瘿昆虫在一定情形下可能改变其寄主植物的雌雄异株之生殖模式。野外调查与实验证明寄主植物受寄生而形成虫瘿的比例很高。但虫瘿密度却于不同沟谷间,或同一沟谷内不同植株间有异。在二条沟谷内,92%和75%植株分别被寄生,而在第3条沟谷内没有植株受寄生。受寄生的雄性植株只产生虫瘿,而受寄生的雌性植株则产生正常果与虫瘿。有迹象显示当寄主植株有虫瘿形成时其正常果数量也更多。作者认为这可能是昆虫诱导功能上雌雄异株植物形成雄性异株雌雄同株之生殖模式的少数例子 相似文献
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作者认为狗枣子(Actinidia kolomikta ( Maxim. & Rupr. ) Maxim.)是一个多型的、具有两个间断布区的适应于地带性针阔叶混交林生境的猕猴桃属植物.文中还根据狗枣子的生态地理分布特征,认为狗枣子的现代中国西南--东北亚间断分布的格局是东亚第三纪以来气候回旋变化的结果所造成的.狗枣子原始分布区(中国西南高山)受气候回旋变化的胁迫衍生出次生的东北亚分布区.由于气候的振荡变化,水平方向上原有的连续分布区逐渐断裂而形成现代的间断分布格局.据此文中还指出,狗枣子分布区的这种传播扩散模式在东亚湿润季风区植物的散布与现代分布格局的形成方面具有普遍意义. 相似文献
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Misun Kim Seong-Cheol Kim Doo-Young Moon Kwan Jeong Song 《Journal of Plant Biology》2007,50(6):681-686
Kiwifruit shoots can be rapidly propagated through a micro-cross section (MCS) system we established here. Optimal culture
conditions were determined for different expiant types, section sizes, and concentrations of inorganic salts and plant growth
regulators. Rates of survival and callus formation were higher in half-strength MS salts than in full-strength MS media. Similar
performance (i.e., survival and callus formation) was achieved with section sizes of either 800 μm or 1200 μm. Proliferation
efficiency was greatest when expiants from stem tissue were cultured on 1/2 MS supplemented with 4.5x10-3 μM 2,4-dichlo-rophenoxyacetic acid and 4.6x10-1 μM zeatin. The number of shoots averaged 2.61 per expiant, representing an efficiency of 94%. RAPD analysis revealed that
the regenerated plants from our MCS system were genetically stable. These results show that the culturing of micro-cross sections
from stem tissue is a powerful method for kiwifruit propagation. 相似文献