红豆杉树皮是一种最重要的提取紫杉醇的原料,但其生长缓慢,资源匮乏,而曼地亚红豆杉的自然杂交品种叶片中的紫杉醇的含量很高,生长迅速,可通过大力栽培解决原料不足的问题.在引种栽培蔓地亚红豆杉的试验过程中,抗寒性是决定其是否能够...红豆杉树皮是一种最重要的提取紫杉醇的原料,但其生长缓慢,资源匮乏,而曼地亚红豆杉的自然杂交品种叶片中的紫杉醇的含量很高,生长迅速,可通过大力栽培解决原料不足的问题.在引种栽培蔓地亚红豆杉的试验过程中,抗寒性是决定其是否能够引种栽培成功的关键因素之一,而半致死温度能较直观,准确地反映植物的抗寒能力,半致死温度的测定常采用电导法.采用电导法对引种栽培的2个曼地亚红豆杉(T.media)品种Hicksii 和Dark Green Spreader(DGS)进行低温半致死温度的测定,并与其生境中的自然温度变化相比较,结果表明,在自然降温的过程中,两个曼地亚红豆杉杂交品种的低温半致死温度随气温的下降而不断的降低,两品种的低温半致死温度分别为-13.3 ℃和-12.6 ℃,均对引种栽培地低温有较强的适应性,且Hicksii品种比Dark Green Spreader品种的抗寒能力略强.因此从理论上讲,两种曼地亚红豆杉品种均可在栽培地及与栽培地相同的生境下栽培成功.展开更多
[Objective] The influences of different habitats on asexual propagation of wild Geg(abbreviation for Gastrodia elata Bl. f. glauca S. Chow) being domesticated in Ganzi prefecture was studied. [Method] The research tri...[Objective] The influences of different habitats on asexual propagation of wild Geg(abbreviation for Gastrodia elata Bl. f. glauca S. Chow) being domesticated in Ganzi prefecture was studied. [Method] The research trial was carried out in the following three kinds of habitats at the same time: the plastic greenhouses, the birch forest of shady slope and the shrubbery of sunny slope, and the results were analyzed with group data average hypothesis test method. [Result] The overall tuber(the juvenile tuber, the immature tuber and the mature tuber) yield and the mature tuber yield were both very significantly higher in the plastic greenhouses than in the other two types of habitats, and respectively reached 9.52 and 6.70 kg/m2; the mature tuber drying rate was dramatically or very dramatically lower in the plastic greenhouses than in the other two types of habitats, and was 23.84%; the stabilities of the overall tuber yield, the mature tuber yield and the drying rate were all reduced in the order of greenhouses, birch forest and shrubbery; and the dry mature tuber yield of the plastic greenhouses was the highest in the three kinds of habitats, and was 1.60 kg/m2. [Conclusion] A good habitat had to be created or chosen in the domesticating cultivation of the wild Geg in Ganzi prefecture. The preferred choice was the plastic greenhouse, the alternative one was the deciduous broadleaved forest of shady slope. The imitating wild planting of the wild Geg should be done in the warm moist deciduous broad-leaved forest of shady slope.展开更多
文摘红豆杉树皮是一种最重要的提取紫杉醇的原料,但其生长缓慢,资源匮乏,而曼地亚红豆杉的自然杂交品种叶片中的紫杉醇的含量很高,生长迅速,可通过大力栽培解决原料不足的问题.在引种栽培蔓地亚红豆杉的试验过程中,抗寒性是决定其是否能够引种栽培成功的关键因素之一,而半致死温度能较直观,准确地反映植物的抗寒能力,半致死温度的测定常采用电导法.采用电导法对引种栽培的2个曼地亚红豆杉(T.media)品种Hicksii 和Dark Green Spreader(DGS)进行低温半致死温度的测定,并与其生境中的自然温度变化相比较,结果表明,在自然降温的过程中,两个曼地亚红豆杉杂交品种的低温半致死温度随气温的下降而不断的降低,两品种的低温半致死温度分别为-13.3 ℃和-12.6 ℃,均对引种栽培地低温有较强的适应性,且Hicksii品种比Dark Green Spreader品种的抗寒能力略强.因此从理论上讲,两种曼地亚红豆杉品种均可在栽培地及与栽培地相同的生境下栽培成功.
基金Supported by Key Natural Science Program of the Education Department of Sichuan province(12ZA103)
文摘[Objective] The influences of different habitats on asexual propagation of wild Geg(abbreviation for Gastrodia elata Bl. f. glauca S. Chow) being domesticated in Ganzi prefecture was studied. [Method] The research trial was carried out in the following three kinds of habitats at the same time: the plastic greenhouses, the birch forest of shady slope and the shrubbery of sunny slope, and the results were analyzed with group data average hypothesis test method. [Result] The overall tuber(the juvenile tuber, the immature tuber and the mature tuber) yield and the mature tuber yield were both very significantly higher in the plastic greenhouses than in the other two types of habitats, and respectively reached 9.52 and 6.70 kg/m2; the mature tuber drying rate was dramatically or very dramatically lower in the plastic greenhouses than in the other two types of habitats, and was 23.84%; the stabilities of the overall tuber yield, the mature tuber yield and the drying rate were all reduced in the order of greenhouses, birch forest and shrubbery; and the dry mature tuber yield of the plastic greenhouses was the highest in the three kinds of habitats, and was 1.60 kg/m2. [Conclusion] A good habitat had to be created or chosen in the domesticating cultivation of the wild Geg in Ganzi prefecture. The preferred choice was the plastic greenhouse, the alternative one was the deciduous broadleaved forest of shady slope. The imitating wild planting of the wild Geg should be done in the warm moist deciduous broad-leaved forest of shady slope.
