Chinese Bulletin of Botany ›› 2017, Vol. 52 ›› Issue (6): 733-742.DOI: 10.11983/CBB16218

• EXPERIMENTAL COMMUNICATIONS • Previous Articles     Next Articles

Salt Tolerant Evaluation of F1-generation Hybrids in Grape

Fu Qingqing, Sun Lulong, Zhai Heng, Du Yuanpeng*()   

  1. Key Laboratory of Crop Biology of Shandong Province/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
  • Received:2016-11-14 Accepted:2016-12-11 Online:2017-11-01 Published:2018-02-22
  • Contact: Du Yuanpeng

Abstract: With rootstock 1103P used as a negative control, annual cuttings of 6 hybrids of Zuoshan1 × SO4 and 2 hybrids of Zuoshan1 × 101-1 were used as materials with 100 mmol·L-1 NaCl irrigation; the chlorophyll content and photosynthetic gas exchange, chlorophyll fluorescence and growth values were measured after 20 days of NaCl treatment (with non-salt treatment as the negative control). The salt tolerance index was evaluated by each growth index; comprehensive assessment was based on principal-component, correlation, membership-function and cluster analyses: A34 and A35 plants showing no salt damage were classified as class 0; A15 and A17 plants showing at a small part of withering at plant leaf margins were classified as class I. Salt stress reduced the chlorophyll content, photosynthetic rate, new shoot growth and biomass in 1103P and B26 but A15, A17, A34 and A35 plants showed less reduction. The biomass and 12 indexes were converted to 3 independent comprehensive indexes. According to cluster analysis, A34, A35, A15 and A17 had relatively higher salt tolerance; A38, A48 and B24 had moderate salt resistance; and 1103P and B26 had more salt sensitivity. These results were consistent with the salt damage classification.

Key words: grape rootstocks, hybrid strains, salt tolerance, evaluation