Chin J Plant Ecol ›› 2007, Vol. 31 ›› Issue (4): 645-651.DOI: 10.17521/cjpe.2007.0083
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CHEN Lin1, DENG Zi-Fa1,2, AN Shu-Qing1,*(), ZHAO Cong-Jiao1, ZHOU Chang-Fang1, ZHI Ying-Biao1
Received:
2006-07-19
Accepted:
2007-01-05
Online:
2007-07-19
Published:
2007-07-30
Contact:
AN Shu-Qing
CHEN Lin, DENG Zi-Fa, AN Shu-Qing, ZHAO Cong-Jiao, ZHOU Chang-Fang, ZHI Ying-Biao. ALTERNATE IRRIGATION OF FRESH AND SALT WATER RESTRAINS CLONAL GROWTH AND REPRODUCTION OF SPARTINA ALTERNIFLORA[J]. Chin J Plant Ecol, 2007, 31(4): 645-651.
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Fig.1 Total biomass, above-ground biomass and below-ground biomass of Spartina alterniflora after irrigation treatment D: 3个月淡水Freshwater treatment for 3 months X: 3个月咸水Saltwater treatment for 3 months DX: 前1.5个月淡水,后1.5个月咸水Freshwater treatment for the former one and half months, then saltwater treatment for the latter ones XD: 前1.5个月咸水,后1.5个月淡水 Saltwater treatment for the former one and half months, then freshwater treatment for the latter ones DXD: 先1个月淡水,后1个月咸水,再1个月淡水Freshwater treatment for the first month, and saltwater treatment for the second month, then freshwater treatment for the third month XDX: 先1个月咸水,后1个月淡水,再1个月咸水Saltwater treatment for the first month, and freshwater treatment for the second month, then saltwater treatment for the third month TB: 总生物量Total biomass AGB: 地上生物量Above-ground biomass BGB: 地下生物量Below-ground biomass 不同的字母表示处理间差异显著(p<0.05) The different letters indicate significant differences at p<0.05 level
处理 Treatments | D | X | DX | XD | DXD | XDX | p |
---|---|---|---|---|---|---|---|
茎生物量Stem biomass (g) | 6.60(0.48)a | 3.83(0.35)b | 3.20(0.29)b | 3.72(0.17)b | 2.96(0.21)b | 3.19(0.24)b | 0 |
叶生物量Leaf biomass (g) | 14.90(0.86)a | 8.98(0.65)b | 7.56(0.52)bc | 8.09(0.44)bc | 7.06(0.33)c | 6.82(0.48)c | 0 |
根生物量Root biomass (g) | 4.92(0.51)a | 4.35(0.41)ab | 3.43(0.38)bc | 3.19(0.31)c | 3.14(0.32)c | 2.88(0.32)c | 0 |
根茎生物量Rhizome biomass (g) | 5.88(0.43)a | 2.72(0.30)b | 3.06(0.20)b | 2.93(0.19)b | 3.22(0.24)b | 3.06(0.47)b | 0 |
RSR (g·g-1) | 0.48(0.04) | 0.55(0.06) | 0.58(0.04) | 0.49(0.02) | 0.60(0.04) | 0.56(0.06) | 0.32 |
SWR (g·g-1) | 0.19(0.01) | 0.19(0.02) | 0.18(0.01) | 0.20(0.01) | 0.18(0.01) | 0.20(0.01) | 0.44 |
LWR (g·g-1) | 0.44(0.01) | 0.44(0.02) | 0.42(0.02) | 0.44(0.01) | 0.42(0.01) | 0.42(0.02) | 0.86 |
RWR (g·g-1) | 0.14(0.01)b | 0.21(0.02)a | 0.19(0.02)a | 0.17(0.01)ab | 0.18(0.02)ab | 0.17(0.01)ab | 0.04 |
RhWR (g·g-1) | 0.17(0.01) | 0.13(0.02) | 0.17(0.01) | 0.16(0.01) | 0.19(0.01) | 0.18(0.02) | 0.09 |
Table 1 Effects of irrigation treatments on stem biomass, leaf biomass, root biomass and rhizome biomass, and on the allocation of total biomass among these organs
处理 Treatments | D | X | DX | XD | DXD | XDX | p |
---|---|---|---|---|---|---|---|
茎生物量Stem biomass (g) | 6.60(0.48)a | 3.83(0.35)b | 3.20(0.29)b | 3.72(0.17)b | 2.96(0.21)b | 3.19(0.24)b | 0 |
叶生物量Leaf biomass (g) | 14.90(0.86)a | 8.98(0.65)b | 7.56(0.52)bc | 8.09(0.44)bc | 7.06(0.33)c | 6.82(0.48)c | 0 |
根生物量Root biomass (g) | 4.92(0.51)a | 4.35(0.41)ab | 3.43(0.38)bc | 3.19(0.31)c | 3.14(0.32)c | 2.88(0.32)c | 0 |
根茎生物量Rhizome biomass (g) | 5.88(0.43)a | 2.72(0.30)b | 3.06(0.20)b | 2.93(0.19)b | 3.22(0.24)b | 3.06(0.47)b | 0 |
RSR (g·g-1) | 0.48(0.04) | 0.55(0.06) | 0.58(0.04) | 0.49(0.02) | 0.60(0.04) | 0.56(0.06) | 0.32 |
SWR (g·g-1) | 0.19(0.01) | 0.19(0.02) | 0.18(0.01) | 0.20(0.01) | 0.18(0.01) | 0.20(0.01) | 0.44 |
LWR (g·g-1) | 0.44(0.01) | 0.44(0.02) | 0.42(0.02) | 0.44(0.01) | 0.42(0.01) | 0.42(0.02) | 0.86 |
RWR (g·g-1) | 0.14(0.01)b | 0.21(0.02)a | 0.19(0.02)a | 0.17(0.01)ab | 0.18(0.02)ab | 0.17(0.01)ab | 0.04 |
RhWR (g·g-1) | 0.17(0.01) | 0.13(0.02) | 0.17(0.01) | 0.16(0.01) | 0.19(0.01) | 0.18(0.02) | 0.09 |
Fig.2 Numbers of propagule, tiller and ramet of Spartina alterniflora after irrigation treatment D、X、DX、XD、DXD、XDX: See Fig. 1 The different letters indicate significant differences at p<0.05 level
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