Assimilate Accumulation，Photosynthetic Characteristics and Yield of Soybean Genotypes with Different Phosphorus Efficiency(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2010年02期

Page:

247-250

Research Field:

Publishing date:

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Title:

Assimilate Accumulation，Photosynthetic Characteristics and Yield of Soybean Genotypes with Different Phosphorus Efficiency

Author(s):

WU Jun-jiang¹; 2; MA Feng-ming¹; LIN Hao¹; 2;  LIU Li-jun²;  ZHONG Peng²;  LIN Wei-gang²;  DONG De-jian²;  WANG Jin-sheng² ;  LIU De-sheng³

1.College of Agronomy, Key Opening Laboratory of Physiology and Ecology of Crop in Cold Terra of Agriculture Ministry, Northeast Agriculture University, Harbin 150086;

2.Soybean Research Institute of Heilongjiang Academy of Agricultural Sciences, Harbin 150086

3.Hailun, Agrotechnology Extention Center ,Hailun 152300, Heilongjiang,China

Keywords:

Soybean;  Phosphorus efficiency; Assimilate accumulation;  Photosynthetic Characteristics;  Yield

PACS:

S565.1

DOI:

10.11861/j.issn.1000-9841.2010.02.0247

Abstract:

Two high phosphorus efficiency soybean (HPES) cultivar of HP134 and HP119, and two low phosphorus efficiency soybean (LPES) cultivar of LP113 and LP102 were planted in pot experiments, and two phosphorus fertilizer application level were applied. The dry matter accumulation, photosynthetic traits and yield were calculated to investigate the indexes that can differentiate soybean cultivars with different phosphorus efficiency. The relative ratio of dry matter accumulation under low phosphorus (LP) to high phosphorus (HP) was higher in HPES cultivar (0.9) than in LPES cultivar (0.6). Under LP treatment, net photosynthetic rate (Pn) of HPES cultivar was higher, while LPES cultivar was lower, than that under HP treatment. HP treatment increased stoma conductance (Cond), intercellular CO₂ concentration (Ci) and transpiration rate (Tr), while LP treatment increased leaf water use efficiency (LWUE). The relative ratio of yield under LP to HP was higher in HPES cultivar (0.9) than in LPES cultivar (0.62). Results suggest that the dry matter ratio and yield ratio under low phosphorus to high phosphorus application level could be used for selecting soybean germplasms with different phosphorus efficiency.

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