JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (03): 75-80.doi: 10.3969/j.issn.1000-2006.2016.03.013

Previous Articles     Next Articles

Effects of rootstocks ages on the shoot growth and leaf photosynthetic fluorescence characteristics of pecan seedling

LI Xiaofei1, CAO Fan1, PENG Fangren1*, LIANG Youwang1, LI Yongrong2   

  1. 1. Co-Innovation Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037,China;
    2. Nanjing Green Universe Pecan Science &
    Technology Co., Ltd, Nanjing 210014, China
  • Online:2016-06-18 Published:2016-06-18

Abstract: The ‘Pawnee' pecan cuttings were grafted onto rootstocks which were 3-year-old, 5-year-old and 9-year-old respectively. The growth, chlorophyll contents, capabilities of fluorescence and photosynthetic characteristics of the new shoots were measured. The results showed that the average length and diameter of the grafted seedling at the end of the first growth season were influenced by the ages of rootstocks. The shoot length and diameter of seedlings grafted with 9-year-old rootstock was the highest. The grafts with older rootstock possessed the higher net photosynthetic rate, total chlorophyll content, water use efficiency and lower transpiration rate in new shoot leaves. This study indicated that the grafted seedlings with older rootstocks had advantages over the ability of photosynthesis, water consumption regulation and drought adaptation.

CLC Number: