| 温度对棉纤维糖代谢相关酶活性的影响 |
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| 引用本文： | 周青,王友华,许乃银,张传喜,周治国,陈兵林. 温度对棉纤维糖代谢相关酶活性的影响[J]. 应用生态学报, 2009, 20(1): 149-156 |
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| 作者姓名： | 周青 王友华 许乃银 张传喜 周治国 陈兵林 |
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| 作者单位： | 1.南京农业大学农业部作物生长调控重点开放试验室， 南京 210095;2.淮阴工学院， 江苏淮安 223003 |
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| 基金项目： | 国家自然科学基金，公益性行业(农业)科研专项资助项目 |
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| 摘 要： | 以棉纤维比强度高的科棉1号和中等强度的美棉33B 2个基因型棉花品种为材料，于2005年在江苏南京(长江流域下游棉区)和徐州(黄河流域黄淮棉区)设置不同播期(4月25日和5月25日)试验，研究了不同温度下棉纤维发育过程中蔗糖酶、蔗糖合成酶、磷酸蔗糖合成酶和β-1,3-葡聚糖酶等糖代谢相关酶活性的动态变化特征及其与纤维长度和比强度形成的关系.结果表明：棉纤维伸长发育期，蔗糖酶、β-1,3-葡聚糖酶活性较高;纤维加厚发育期，蔗糖合成酶和磷酸蔗糖合成酶活性上升速度快、活性高，蔗糖酶和β-1,3-葡聚糖酶活性下降速度快.纤维伸长期，蔗糖酶活性升高对纤维的伸长具有明显促进作用;纤维加厚发育期，提高蔗糖合成酶、磷酸蔗糖合成酶活性及加快蔗糖酶和β-1,3-葡聚糖酶活性下降速度有利于提高纤维比强度.科棉1号前期蔗糖酶、β-1,3-葡聚糖酶活性及中后期蔗糖合成酶、磷酸蔗糖合成酶活性均较美棉33B高.在本试验条件下，23.3 ℃是高强纤维形成的适宜温度，23.3 ℃～25.5 ℃是纤维长度形成的适宜温度.
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| 关 键 词： | 海拔 径向生长 快速升温 白桦 |
| 收稿时间： | 2008-05-16 |
Effects of air temperature on enzyme activities of cotton plants related to saccharide metabolism of cotton fiber. |
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| ZHOU Qing,WANG You-hua,XU Nai-yin,ZHANG Chuan-xi,ZHOU Zhi-guo,CHEN Bing-lin. Effects of air temperature on enzyme activities of cotton plants related to saccharide metabolism of cotton fiber.[J]. The journal of applied ecology, 2009, 20(1): 149-156 |
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| Authors: | ZHOU Qing WANG You-hua XU Nai-yin ZHANG Chuan-xi ZHOU Zhi-guo CHEN Bing-lin |
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| Affiliation: | 1.Ministry of Agriculture Key Laboratory of Crop Growth Regulation, Nanjing Agricultural University, Nanjing 210095, China;2.Huaiyin Institute of Technology, Huaian 223003, Jiangsu, China |
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| Abstract: | Taking two cotton cultivars with different fiber strength (KC-1, aver age fiber strength 35 cN·tex-1; and AC-33B, average fiber strength 32 cN ·tex-1) as test materials, a field experiment with two planting dates (25 April and 25 May) was conducted in Nanjing of Jiangsu (lower reaches of Yangtze River Valley) and Xuzhou of Jiangsu (Yellow River Valley) to study the dynamic changes of plant sucra se, sucrose synthase, sucrose phosphate synthase, and β-1,3-glucanase activit ies during the development of cotton fiber at different air temperatures and the ir relationships with fiber length and strength. In the development period of fi ber elongation, sucrase and β-1,3-glucanase activities were higher; while du ring the period of fiber thickening, sucrose synthase and sucrose phosphate synt hase activities increased rapidly and were high, but sucrase and β-1,3-glucan ase activities had a rapid decrease. The higher sucrase activity in fiber elonga tion development period favored the fiber length development, while the rapid in crease of sucrose synthase and sucrose phosphate synthase and the rapid decrease of sucrase and β-1,3-glucanase activity favored the development of fiber str ength. For cotton variety KC-1, the sucrase and β-1,3-glucanase activities i n its early development period and the sucrose synthase and sucrose phosphate sy nthase activities in its middle and later development periods were all higher th an those of AC-33B. In this study, 233 ℃ was the optimal temperature for hig h strength fiber formation, and 233 ℃〖KG-*2〗-〖KG-*7〗255 ℃ was the opti mal temperature for long length fiber formation. |
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| Keywords: | Betula platyphylla radial growth altitude rapid warming. |
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