Crops ›› 2018, Vol. 34 ›› Issue (4): 102-105.doi: 10.16035/j.issn.1001-7283.2018.04.017

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Effects of Different Leaf-Peg Ratio on Photosynthesis and Yield of Peanut

Quan Baoquan,Bai Dongmei,Tian Yuexia,Xue Yunyun   

  1. Industrial Crop institute, Shanxi Academy Agricultural Sciences, Fenyang 032200, Shanxi, China
  • Received:2018-03-05 Revised:2018-07-03 Online:2018-08-20 Published:2018-08-23

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Abstract:

The peanut of Jinhua10 was used in this study in which 25% peg, 50% peg, 25% leaf and 50% leaf were removed late in the podding phase and natural plant was control by single-seed sowing. The LAI, chlorophyll and photosynthesis rate of single leaf of two treatments of artificial leaf-removal were higher than the two treatments of peg-removal, the late these indexes of leaf-removal treatments decreased faster, which was not conducive to the accumulation of photosynthetic products. The LAI and chlorophyll of 25% peg-removal were higher and decreased slowly, therefore the photosynthetic rate remained higher in the late growth stage. Higher LAI and chlorophyll and photosynthesis rate resulted in faster rate of dry matter accumulationand, heavier fruits, and yield (7.5% higher than the control). The peg of 50% peg-removal compared with 25% peg-removal, resulted in reducing the number of fruits, decreasing biological yield. The data of two years showed that the yield of the two treatments of peg-removal increased than the control; and the yield of the two treatments of leaf-removal decreased than the control. Appropriate peg-removal was beneficial to improve the yield of peanut.

Key words: Peanut, Single-seed sowing, Dry matter accumulation, Yields, Photosynthesis

Fig.1

Effect of different leaf-peg ratio on LAI of peanut"

Fig.2

Effect of different leaf-peg ratio on chlorophyll content of peanut leaf"

Fig.3

Effect of different leaf-peg ratio on photosynthesis rate per leaf of peanut"

Fig.4

Effect of different leaf-peg ratio on dry matter accumulation of peanut||| Values followed by different letters are significantly difference at the 0.05 probability level"

Table 1

Effects of different leaf-peg ratio on yield and composition factor of yield of peanut"

处理
Treatment		 产量(kg/hm2)
Yield		 单株果数
Pods per plant		 单位重量果数
Pods per kg		 饱果率(%)
Full fruit rate		 双仁率(%)
Double kernel rate		 出仁率(%)
Kernel rate
摘除25%果针25% peg-removal 3 515a 18.1a 598.7c 76.9a 86.3a 72.2a
摘除50%果针50% peg-removal 3 345b 16.9b 618.0b 77.7a 84.2ab 71.5b
摘除25%叶片25% leaf-removal 3 210c 13.8c 629.0b 76.8a 83.5b 71.4b
摘除50%叶片50% leaf-removal 3 024d 11.2d 652.3a 72.4c 82.8b 70.6c
CK 3 270bc 15.5b 628.6b 74.9b 83.1b 71.1bc
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