Reproduction of juniper (Juniperus polycarpos) in Khorasan Razavi, Iran

查看全文 作　　者：Hamid [1]AHANI;Hamid [1]JALILVAND;Seyed Mohammad HOSSEINI [1]NASR;Hossein SOLTANI [2]KOUHBANANI;Mohammad Reza [3]GHAZI;Hassan [4]MOHAMMADZADEH 机构地区：[1]Agricultural Sciences and Natural Resources University of Sari,Iran;[2]Natural Resources and Watershed Administration of Khorasan Razavi,Iran;[3]Torogh Nursery, Natural Resources and Watershed Administration of Khorasan Razavi,Iran;[4]Natural Resources and Watershed Administration of Kalat Naderi, Khorasan Razavi,Iran 出　　处：《Forestry Studies in China》索引2013年第15卷第3期,共7页 摘　　要：Juniperus species(juniper)are resistant to drought and have medicinal properties.In order to investigate the condition of juniper reproduction and prevent a decline in its area,largely caused by problems in natural regeneration,the asexual reproduction of juniper has received special attention besides its sexual propagation.Among the six species of juniper in Iran,the most abundant are Juniperus polycarpos and J.excelsa.Juniperus polycarpos is ambi-sexual and J.excelsa unisexual.We show that collecting seeds in September provided for better germination than in November.In sexual propagation 82.0%and in asexual(graft)47.6%success were achieved.Compared to a mixture of water,lime and hormones,a natural treatment of only water had better results.Diurnal change of temperature increased germination of juniper seeds over a constant temperature.Aphyllous stem cuttings from mature and old trees are less successful in rooting than leafy cuttings of juniper saplings.A treatment with Aaterra significantly reduced the percentage of rooted cuttings and total root length.Aliette,Fongarid,Octave,Benomyl,Delsene M and Maneb fungicides significantly increased the percentage of rooted cuttings but did not affect total root length.Autumn explants formed more calli than spring explants.Successful multiplication was achieved by treating buds with a mixture of 0.7%polyvinyl pyrrolidone(PVP)and 2%sucrose and cultured in a basal MS or WRC medium,with a maximum number of new buds.In consideration of extracted material of juniper species in remedy of infectious,fungus,contagious diseases as well as for drought resistance and longevity of this species in severe arid environmental conditions and various industrial applications,reproduction and seed production by micro propagation and biotechnology are necessary. 关 键 词：无性繁殖 杜松 刺柏 伊朗 聚乙烯基吡咯烷酮 温度日变化 传染性疾病 扦插生根