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首页> 外文期刊>Crop Research >Comparative study between Cupressus sempervirens and Cupressus arizonica in seed germination and seedling vigour.
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Comparative study between Cupressus sempervirens and Cupressus arizonica in seed germination and seedling vigour.

机译：南方Cu柏和亚利桑那Cu柏种子萌发和幼苗活力的比较研究。

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摘要

Mediterranean cypress is the most important and widespread species used in many agricultural purposes and plays fundamental ecological, economical and ornamental roles in the Mediterranean region. The Cupressus species has important characteristics of marked drought hardiness. The main objective of the present study was to investigate primarily seed germination and early growth performance of C. sempervirens and C. arizonica. The failure of seeds to germinate causes low germination percentage and low seedling production. The seeds were collected from three different locations in Jordan: Amman, Shobak and Tafileh. The overall germination percentage was in the range of 30 to 48%. C. arizonica was found only in Tafileh and had higher germination percentage (48%) and germination rate index (GRI) compared to Amman and Shobak. In Shobak location, the germination percentage was 38 and 30 in both C. sempervirens and C. arizonica, respectively, that was not significantly different compared to 38 and 38% in both the species, respectively, in Amman. The site conditions such as elevation, rainfall and temperature did not show an effect on the germination process such as Amman and Shobak almost have similar rainfall but different elevation. The differences in rainfall and elevation affect the seedling and root growth. In Shobak, C. sempervirens root growth was significantly higher than the other species. While there were no significant differences in the seedling growth. It is well noticed that the shoot:root length ratio was significantly higher in Tafileh, while the lowest ratio was in C. sempervirens in both Amman and Shobak. In Shobak, C. sempervirens root and shoot dry weight was not significantly different even compared to the other species in the other locations.
机译：地中海柏是用于许多农业目的的最重要和最广泛的物种，在地中海地区起着根本的生态，经济和装饰作用。柏树种具有明显的抗旱性。本研究的主要目的是主要研究种子萌发和iC的早期生长性能。 sempervirens 和 C。亚利桑那州。种子发芽失败导致发芽率低和幼苗产量低。种子是从约旦的三个不同地点收集的：安曼，Shobak和Tafileh。总体发芽率在30％至48％的范围内。 C。与安曼和肖巴克相比，仅在塔菲木中发现了亚利桑那，其发芽率（48％）和发芽率指数（GRI）更高。在Shobak位置，两个i的发芽率分别为38和30。 sempervirens 和 C。分别与安曼两个物种的38％和38％相比没有显着差异。诸如海拔，降雨量和温度之类的场地条件并未对发芽过程产生影响，例如安曼和肖巴克的降雨几乎相同，但海拔不同。降雨和海拔的差异会影响幼苗和根系的生长。在Shobak， C。 sempervirens 根的生长明显高于其他物种。虽然幼苗生长没有显着差异。众所周知，塔菲木的枝条：根长比显着较高，而最低的比例是在iC中。 sempervirens 在安曼和肖巴克都有。在Shobak， C。甚至与其他地区的其他物种相比，sempervirens根和苗的干重也没有显着差异。

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