共查询到20条相似文献，搜索用时 312 毫秒
1.
采用3种不同配方的生长激素并设置三个浓度梯度处理大花栀子(Gardenia jasminoides var.grandiflora)和小叶栀子(Gardenia jasminoides var.radicans)插穗,然后再进行了扦插试验。扦插30 d后的结果表明:用300 mg/L吲哚丁酸(IBA)+300 mg/L萘乙酸(NAA)处理过的大花栀子试验组其生根数量、生根率、生根质量在各种处理组中表现最优;而500 mg/L吲哚丁酸(IBA)+500 mg/L萘乙酸(NAA)的激素浓度最适宜于小叶栀子生根,其生根数量、生根率、生根质量在各种处理组中表现最优。 相似文献
2.
黄栀子[Gardenia jasminoidesEllis(Gardenia)]是一种重要的中药材和优良食用色素植物,湖南种植面积和产量均居全国第一。近年来普遍发生了褐色云纹斑病(简称褐纹斑病)。据在基点调查,一般株发病率为36％,个别严重地段株发病率达46％,且一旦环境条件适宜,病势蔓延很快,对生长和产量均有影响。文献上黄栀子曾有叶斑病(Pyllos-ticta gerdeuiicola)和轮班病(Pest-alotia theae)的报导,但与此病不同。为了弄清其病原,以便进行有效防治,1982年6月至1983年底,我们以湘潭县鸟石乡槐坪塘黄栀子场为基点,对病害作了调查,并进行了病原的初步鉴定工作。 相似文献
3.
本文报道了枫香(Liguidambar formasana Hance)、黄柏(Phellodendron amurense Rupr.)、栀子(Gardenia jasminoides Ellis.)的有效成分及利用价值。 相似文献
4.
黄栀子Gardenia jasminoides Ellis,又名栀子,常绿灌木。黄栀子不仅是保持水土,美化环境的优良树种,而且具有很高的经济价值,其果实是1种常用中药,具有抗菌、抗病毒、消炎、利胆、促进胰腺分泌、镇痛、降温和降低血压等功效,更重要的是黄栀子可以提炼天然色素,它色价高、性能稳 相似文献
5.
栀子灰蝶(Artipe eryx)是栀子(Gardenia jasminoides)及其变种大叶重瓣栀子(G.jasminoides var.fortuniana)、小叶重瓣栀子(G.jasminoides var.radicans)的花蕾和果实害虫,以幼虫蛀害花蕾、果实,造成大量的落花落果,可严重影响栀子花的观赏价值和花、果产量。通过室内饲养和室外观察,对栀子灰蝶在丽水地区的生物学特性进行观察,结果表明,栀子灰蝶在丽水地区一年发生6代,10月下旬起以幼虫或蛹在被害栀子果内或枯枝残叶下越冬,次年2、3月间化蛹,4月成虫羽化。通过冬季清园、保护天敌和适时喷药可控制栀子灰蝶的危害。 相似文献
6.
7.
四季栀子与栀子花(Gardenia Ellis var fortuniana Lindl)同属茜草科栀子属常绿灌木，又名矮栀子。植株呈矮灌木状，枝干多横斜生长。叶较栀子花的叶狭小，呈倒披针形或倒卵形，基部渐狭至柄。花重瓣，在正常管理水平下，可四季开花，花芬芳扑鼻，花色晶莹如玉，衬以绿叶，格外俏丽可爱，是重要的美化居 相似文献
8.
9.
10.
为有效地开发利用黄栀子种质资源,加快育种进程,对黄栀子果实中的主要有效成分进行了测定与分析,并探讨了有效成分与农艺性状的相互关系。结果表明:供试的不同种类黄栀子果实均含有栀子酸、绿原酸、栀子苷以及藏红花素,但各成分的含量差异较大,其中栀子苷含量最高,平均可达10.44 mg/g,其次是藏红花素,为9.4 mg/g,绿原酸为1.74 mg/g,栀子酸含量最少,平均仅为1.15 mg/g;果实有效成分遗传多样性指数均大于1.0,但遗传力均比较小,表明供试的4种黄栀子品种果实有效成分遗传分化能力强,具有丰富的遗传多样性;叶片性状及冠幅与果实有效成分呈极显著正相关,果实表型性状及单株果数与果实有效成分也呈极显著正相关,且相关系数均高于0.8。 相似文献
11.
12.
山桐子(Idesia polycarpa Maxim.)属大风子科(Flacourtiaceae)山桐子属(Idesia Maxim.)植物,主要分布于我国长江流域、华北和西北南部的17个省区。另外,朝鲜、日本的南部也有分布[1]。山桐子树干通直,树形美观,生长迅速,适应性强,材质优良,3年生实生苗木即可挂果,是我国南方主要城市园林绿化和用材树种之一.研究发现,山桐子果实含油率及油中不饱和脂肪酸含量较高,而不饱和脂肪酸中尤以亚油酸含量最高[2-3]. 相似文献
13.
为给黄栀子的资源评价及良种选育提供理论参考和指导,对引种栽培的各类型黄栀子的树高、冠幅、叶片性状、果实表型性状以及单株产量等主要农艺性状进行了评价及相关性分析。结果表明:各类型黄栀子农艺性状间差异显著,主要经济性状间存在极显著差异。LH黄栀子多数农艺性状均优于其它类型黄栀子。在果实纵横径、单株果数以及单株产量等方面尤为明显。黄栀子单果鲜质量及单株果数与单株产量呈极显著相关性,相关系数分别可达0.989和0.929;果实纵横径、树高及冠幅与单株产量相关性均达到极显著水平,但萼长及叶片相关性状与产量相关性不显著。 相似文献
14.
15.
This research investigated and selected 4 natural populations of Picea likiangensis in Yunnan province, based on its natural distribution. The length, width, dry weight and C, N, P contents in needles of the 4 populations were measured to survey the phenotypic variation of natural populations and the relationship between the phenotypic variation and their altitude of distribution areas. The methods of ANOVA analysis, multi-comparison and correlation analysis were used for analyzing the data measured. The results showed that, there were remarkable (P<0.01) variations in needle length, width and dry weight among populations, with component of variance 15.05%-28.03%, but no variation of them within populations. The dry weight was significantly (P<0.01) positively correlated to the needle length and width, and their correlation coefficients were 0.466 39 and 0.665 67, respectively. Regarding to element content in needles, there were significant (P<0.05) variations of N and P contents, and C/N ratio among populations, excepting C content. Moreover, the component of variance among populations was higher (29.98%-37.56%) when compared with that within populations, and there was distinctly (P<0.01) variance of N/P ratio among populations, and its component of variance was 60.44%. For correlations between needle length and N/P ratio, altitude was negatively and significantly (P<0.01) correlated; for needle width, altitude was significant (P<0.01) positive correlated, for C content and C/N ratio, altitude was significantly (P<0.05) positively correlated. 相似文献
16.
Phoebe bournei (Hemsl.) Yang is a rare and protected plant in China. This study was conducted to determine the phenotypic variation in this species and to document phenotypic variation within and among populations of P. bournei. Nested analysis of variance, coefficient of variation, multiple comparisons, principal component analysis (PCA) and correlation analysis were used to analyze ten phenotypic traits in ten natural populations of P. bournei from both the northeastern and the primary region of the range of this species. Significant differences among and within populations were observed in leaf and seed phenotypic traits. Variation among populations (34.92%) was greater than that within populations (26.19%). The mean phenotypic differentiation coefficient was 53.77% among populations, indicating that variation among populations comprised the majority of the phenotypic variation of P. bournei. The coefficient of variance (CV) of ten traits varied from 6.44 to 18.45%, with an average of 12.03%. The CV of leaf traits among populations (15.64%) was higher than that of seed traits (8.60%), indicating that seed traits were more stable. The results from CV and PCA indicated that leaf area, leaf length and thousand seed weight were the main factors accounting for the observed phenotypic variations. Significant or highly significant correlations were observed among most leaf and/or in seed phenotypic traits, whereas no significant correlations were observed between phenotypic traits and geographic factors. Based on cluster analysis, the ten populations can be divided into three clusters. These clusters were not a result of geographic distances. 相似文献
17.
18.
以文冠果果实为研究对象,调查了研究区内44株文冠果果实的19个表型性状,利用变异系数、方差分析和相关分析研究了调查区内文冠果人工种群的变异情况。方差和变异系数分析结果表明,研究区内文冠果果实表型性状差异都极显著,并在不同个体之间存在很大的变异幅度。其中,单株结果量和种子产量变异最大(变异系数大于76%),其次是单果质量、单果种质量和单果仁质量(变异系数约30%),再次是单果出种数和果柄长度(变异系数大于20%),而种子长、种子宽、种形比和心室数变异较小(变异系数低于10%),种仁出油率变异最小(变异系数6.13%);单株间丰产性差异明显,并具有一定的遗传稳定性。相关性分析结果表明,文冠果人工种群果实不同性状的相关性不一样并差异显著,其中果长、果宽、果质量、种质量、仁质量、种子长、出种数、出种率、千粒质量和果柄粗的相关性强,与多个性状呈显著相关,而果形比、出仁率、结果量和种子产量与个别性状呈显著相关,果实心室数和果柄长相关性最弱,与所有性状相关性不显著。 相似文献
19.
从表型性状和分子水平上研究了小果油茶农家品种间的遗传差异及亲缘关系。结果表明:小果油茶农家品种在果实、叶和花性状上的变异极为丰富,每500 g鲜果数的变异系数最大(76.91%),不饱和脂肪酸含量变异系数最小(3.31%);果实性状的变异程度高于叶和花性状;果纵径和果横径与叶长、叶周长和花冠直径呈显著或极显著正相关;农家品种宜春白皮中籽表型性状的总变异程度高于龙眼茶、羊屎茶和珍珠茶。利用25对AFLP引物组合在4个小果油茶农家品种和普通油茶中共扩增出921条带,其中多态性条带706条,多态性条带比率达75.7%;羊屎茶与宜春白皮中籽的遗传相似系数最大(0.698 2),龙眼茶与普通油茶的相似系数最小(0.558 1)。AFLP标记和表型性状的聚类都可将小果油茶农家品种和普通油茶分开,但对小果油茶农家品种间的归类并未完全一致。 相似文献
20.
Functional traits and plasticity linked to seedlings’ performance under shade and drought in Mediterranean woody species 总被引：1，自引：0，他引：1
David Sánchez-Gómez Miguel A. Zavala Fernando Valladares 《Annals of Forest Science》2008,65(3):311-311
Interspecific differences in morphology, biomass allocation and phenotypic plasticity along an experimental irradiance gradient and two contrasting water regimes were studied for eight Mediterranean woody species at the seedling stage; a critical demographic stage in Mediterranean plant communities. We tested whether species variation in these traits can explain previously reported interspecific differences in performance under shade and drought. Four irradiance levels (1%, 6%, 20% and 100% of full sunlight) and two water regimes (well watered and water-stressed conditions) in 6% and 100% irradiance levels were established. Quercus species exhibited the largest seeds, the highest total dry mass and also the highest root-shoot ratio, but their leaf mass fraction (LMF) and leaf area ratio (LAR) were low. Pistacia terebinthus, and Arbutus unedo exhibited the opposite traits. From those traits that correlated with seed size only LAR resulted significantly linked to survival in deep shade. None of the traits studied correlated with survival under water-stressed conditions. Overall phenotypic plasticity was negatively correlated with survival in deep shade but no correlation was found with survival under water-stressed conditions. Our results highlight the importance of low LAR and low phenotypic plasticity as potential determinants of enhanced performance under shade during the very early seedling stages of Mediterranean woody species. Low LAR was also positively correlated with seed size and consequently, its relationship with enhanced performance under shade might change at later life stages of the plant when seed reserves are no longer available. 相似文献