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以咸阳市为例,结合咸阳市城市发展总体规划,探讨市花紫薇花的文化内涵及在城市园林建设中的开发应用,旨在发扬紫薇文化,打造咸阳市特色城市名片. 相似文献
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以母本尾叶紫薇与父本紫薇‘香雪云’及杂交F1代192株为试材,对株高、地径、叶长、叶宽及叶面积5个性状在群体中的遗传变异进行了统计和分析。结果表明:150对SSR引物筛选出F1群体亲本有多态性的引物对50个; 5个表型性状在群体中呈连续分布,与其正态分布曲线拟合较好,并且彼此之间具有相关性。采用单因素方差分析法进行SSR分子标记和性状的连锁分析得到:SSR3-153、SSR40-131、SSR40-137与紫薇的叶宽显著性相关,贡献率分别为25.5%、12.1%、11.6%;SSR34-158、SSR34-161与紫薇的叶长显著性相关,贡献率分别为7.8%、9.1%;SSR10-172与紫薇的株高和地径显著性相关,贡献率分别为15.7%、10.3%。 相似文献
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Samir Smeti Souha Tibaoui Juan Ramon Bertolín Yathreb Yagoubi Ilyes Mekki Margalida Joy Naziha Atti 《Journal of animal physiology and animal nutrition》2021,105(3):452-461
Despite the fact that the use of rosemary and thyme residues and essential oils in animal feeding was widely documented, that of myrtle is scarce. To test the hypothesis that myrtle essential oils (MEOs) could improve goats' carcass characteristics and meat quality traits, twenty-one male goats received a ration consisted of 40% oat hay and 60% concentrate. Experimental goat kids received the control diet supplemented with 0, 0.3 and 0.6% of myrtle essential oils (MEOs) for C, Myrt1 and Myrt2 groups respectively. The administration of MEO did not improve the daily DM intake (p > 0.05). Kids of C and Myrt2 groups had higher average daily gain than Myrt1 group (75 versus 55 g). The goats slaughtered at 19.9 kg of weight did not differ (p > 0.05) in carcass weights and carcass yield in terms of commercial dressing percentage (CDP = 41%) and real dressing percentage (RDP = 52%). The administration of MEO increased the meat polyphenol content, being higher in both Myrtle groups (87 versus. 56 μg gallic acid equivalents g-1 fresh matter, p < 0.05). Myrtle EO administration protected kids’ meat against oxidation (0.48 versus. 0.91 mg MDA/kg of meat for Myrtle and C groups, respectively, at the 9th day of storage; p < 0.05). It could be useful to include MEO as a dietary supplement in goats’ rations since it improves meat's oxidative status without negative effects on FA profile. 相似文献
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紫薇异倍体的杂交亲和性分析及子代倍性鉴定 总被引:1,自引:0,他引:1
以二倍体红薇(H,2n)、三倍体紫薇(Z,3n)、四倍体紫薇(Z,4n)及四倍体银薇(Y,4n)为试材,进行杂交试验,检测紫薇异倍体杂交的亲和性,并采用细胞学倍性鉴定法对杂交子代的倍性进行鉴定和比较。结果显示:不同杂交组合子代的结实特性以及种子的出苗率均存在差异,其中Z(4n)×H(2n)的单果重(0.22 g)、单果种子数(40.1)、千粒重(1.79 g)及出苗率(36.4%)均高于H(2n)×Y(4n),且差异达到显著水平,表明在二倍体与四倍体的杂交中,四倍体作为母本的亲和性更高;H(2n)×Z(3n)后代倍性主要为非整倍体,占80%以上,其次是2n,占11.8%;Y(4n)×H(2n)后代倍性主要为3n,占50%,其次是非整倍体,占40%;H(2n)×Z(3n)后代中,1株为3n,2株为非整倍体;Y(4n)×H(2n)后代中,6株为3n,3株为非整倍体;H(2n)×Y(4n)后代幼苗中,1株为2n,1株为3n;Z(4n)×Z(4n)后代中,1株为4n;在杂交组合H(2n)×Z(3n)、Y(4n)×H(2n)及H(2n)×Y(4n)后代中还出现三子叶变异的幼苗。 相似文献