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Plant hormone treatments to alleviate the effects of salt stress on germination of Betula platyphylla seeds 被引量:1
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作者 Zhixin Li Xiaona Pei +3 位作者 Shaopeng Yin Xianbo Lang Xiyang Zhao Guan-Zheng Qu 《Journal of Forestry Research》 SCIE CAS CSCD 2019年第3期779-787,共9页
We analyzed the germination traits (germination rate, germination potential, and germination index) of seeds from 23 half-sib families of birch (Betula platyphylla). The germination rates of the 23 families ranged fro... We analyzed the germination traits (germination rate, germination potential, and germination index) of seeds from 23 half-sib families of birch (Betula platyphylla). The germination rates of the 23 families ranged from 38.57 to 76.50%. Seeds from the eight families germinating at the highest rates were then used for germination experiments under salt stress. Germination rate, germination potential, and germination index of these eight half-sib families decreased with increasing salt concentrations. The effects of four different hormones (6-benzylaminopurine, 6BA;gibberellin, GA3;naphthalene acetic acid, NAA;and melatonin) at various concentrations on the germination of seeds from the eight half-sib birch families under salt stress were investigated. Treatments with 6BA and GA3 alleviated the effects of salt stress on seed germination, whereas treatments with NAA and melatonin aggravated the effects of salt stress. The most effective treatments for alleviating the effects of salt stress on birch seed germination were 10 mg/L 6BA and 300 mg/L GA3. This study provides practical information for screening birch families for salt tolerance at the seed germination stage, and for cultivation of birch in saline environments. 展开更多
关键词 BETULA platyphylla GERMINATION Salt stress HORMONE
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Effect of Spent Mushroom Substrate on Physical and Chemical Properties and Enzymic Activity of Rice
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作者 Hairu YU Xue LI +5 位作者 Xin ZHANG Changming GE Renzhe PIAO Meishan LI Zongjun CUI Hongyan ZHAO 《Asian Agricultural Research》 2016年第6期65-67,72,共4页
In order to explore the substitution substrate for rice seedling on upland fields,this paper uses spent mushroom substrate to study the physical and chemical properties of substrate,enzymic activity and number of till... In order to explore the substitution substrate for rice seedling on upland fields,this paper uses spent mushroom substrate to study the physical and chemical properties of substrate,enzymic activity and number of tillers during the cultivation of rice seedling on upland fields.The results show that at the three stages of rice seedling cultivation( two-leaf stage,three-leaf stage,four-leaf stage),the content of organic matter and EC in spent mushroom substrate is higher than in the control soil,p H is within the range suitable for the growth of rice,and other nutrients( total nitrogen,total phosphorus,total potassium,available nitrogen,available phosphorus) are slightly different in different periods;except phosphatase,there are significant differences in urease,catalase and sucrase between spent mushroom substrate and the control soil; the number of tillers under spent mushroom substrate is larger than under the control. 展开更多
关键词 SPENT MUSHROOM SUBSTRATE RICE PHYSICAL and chemical INDICATORS Enzymic activity
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Multiple Shoots Propagation with Bioreactor Culture of Labisia pumila(Bl.) F. Vill.
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作者 QI Wen-wen JIANG Yin-ji +3 位作者 LI Yong-yi MURTHY Hosakatte-niranjana CUI Xi-hua ZHANG Ji-de 《Agricultural Science & Technology》 CAS 2018年第3期31-39,共9页
This study was to establish the micropropagation system of Labisia pumila (Bl.) F. Vill. and explore the feasibility of mass production of its multiple shoots by bioreactor culture. [Method] The effects of cytokini... This study was to establish the micropropagation system of Labisia pumila (Bl.) F. Vill. and explore the feasibility of mass production of its multiple shoots by bioreactor culture. [Method] The effects of cytokinin or cytokinin/auxin mixture solution at different concentrations on its shoot growth and propagation by nodal segment culture were tested. In order to mass-proliferate its shoots, multiple shoots were suspension-cultured on Murashige and Skoog (MS) liquid medium in the bioreactor. [Results] Thidiazuron (TDZ) showed the highest cytokinin-like activity and the number of its shoots at the TDZ concentration of 0.1 mg/L was the maximum up to 21.5 shoots per explant, without the TDZ effect on shoot elongation, but zeatin signifcantly promoted the shoot elongation and each explant grew 6.8 relatively long shoots at 5.0 mg/L of zeatin. There was no signifcant effect on shoot propagation on induction medium supplemented with auxin. By inoculating 10 g/L (260 shoots) of multiple shoots into 3 L airlift bioreactor containing 2 L MS liquid medium supplemented with 0.1 mg/L TDZ for solution culture, 6 100 multiple shoots with a fresh weight of 183.13 g were harvested. After explant regeneration was conducted in MS solid medium, the regenerated plants were transplanted into flowerpot and the morphologically normal and healthy plants were obtained. [Conclusion] The development of bioreactor technology was conducive to the high efficiency propagation of L. pumila shoot. 展开更多
关键词 Labisia pumila Multiple shoot AUXIN BIOREACTOR CYTOKININ PROPAGATION
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