文献类型：期刊文献

英文题名：Possibility of Increasing the Growth and Photosynthetic Properties of Precocious Walnut by Grafting

作者：Bai, Yongchao[1] Zhang, Junpei[1] Wu, Yue[2] Huang, Ruimin[1] Chang, Yingying[1] Lei, Xiashuo[1] Song, Xiaobo[1] Pei, Dong[1]

第一作者：Bai, Yongchao

通信作者：Pei, D[1]

机构：[1]Chinese Acad Forestry, Key Lab Tree Breeding & Cultivat State Forestry &, State Key Lab Tree Genet & Breeding, State Forestry & Grassland Adm,Res Inst Forestry, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China

年份：2020

卷号：12

期号：12

外文期刊名：SUSTAINABILITY

收录：;Scopus(收录号：2-s2.0-85086935291);WOS:【SSCI(收录号:WOS:000552458600001)，SCI-EXPANDED(收录号:WOS:000552458600001)】；

基金：The authors extend their appreciation to the National Key Research and Development Program of China (grant number: 2018YFD1000604) and the Basal Research Fund of the Central Public Welfare Scientific Institution of the Chinese Academy of Forestry (grant number: CAFYBB2019ZY001).

语种：英文

外文关键词：Juglansspp; grafting; growth characteristics; photosynthesis; sustainable production

摘要：Plant growth characteristics after grafting are mainly dependent on photosynthesis performance, which may be influenced by grafting combinations with different rootstocks and scions. In this study, we used one-year-old walnut grafts to investigate the grafting compatibility between precocious ('Liaoning 1', L) and hybrid ('Zhong Ning Sheng', Z) walnut, as well as rootstock and scion impact on the growth and photosynthetic properties of walnut trees. The results showed that grafting compatibility between the two varieties is high, with survival rates upward of 86%. Overwintering survival of grafted seedlings was as high as 100%, which indicated that the allopolyploid had good resistance to low-temperature stress. The homograft of the hybrid walnut had the highest net photosynthesis rate (18.77 mu mol center dot m(-2)s(-1), Z/Z) and growth characteristics, which could be due to its higher transpiration rate and stomatal conductance, whereas the homograft of precocious walnut presented the lowest net photosynthesis rate (15.08 mu mol center dot m(-2)s(-1), L/L) and growth characteristics. Significant improvements in the net photosynthesis rate (15.97 and 15.24 mu mol center dot m(-2)s(-1)for L/Z and Z/L, respectively) and growth characteristics of precocious walnut were noticed during grafting of the hybrid walnut, which could have been contributed by their transpiration rate. The results of this study serve as a guide for the selection and breeding of good rootstock to improve plant growth characteristics and photosynthetic efficiency. We conclude that good rootstock selection improves plant growth potential and could play an important role in sustainable production.