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- Title
酸度介导连作基质下马铃薯原原种 产量及疮痂病防控研究.
- Authors
刘凌云; 包丽仙; 卢丽丽; 尹自友; 杨琼芬
- Abstract
[Objective] In order to obtain stable tuber yield and reduce the occurrence of potato scab disease with the mode of continuous cropping of potato original seed. [ Method] In this experiment, the effects of four acidity mediated treatments for two potato varieties on potato original seed tuber numbers per plant, effective tuber numbers per plant ( tuber weight ;;. 2 g), disease infection rate and disease index of potato scab, and sensitive period of tuber yield and scab disease with acidity mediated treatments in continuous cropping matrix breeding were studied. [Result] The results showed in potato original seed breeding by continuous cropping matrix, there were highly significant difference for disease infection rate and disease index of potato scab, but there were no difference for tuber numbers per plant and effective tuber numbers per plant with different acidity mediated treatments. Grey correlation analysis showed the correlation coefficients with acidity mediated treatments of potato tuber numbers per plant and effective tuber numbers per plant were 0.4020 and 0.3549 in Nov 2nd ( growth period of 78 days); and the correlation coefficients with acidity mediated treatments of potato scab disease infection rate and disease index were 0.1551 and 0. 1513 in Nov 25th (growth period of 101 days). [Conclusion] The acidity mediated treatment of pH 6.0 was the best of the acidity mediated experiments, the average effective tuber numbers per plant achieved 3.32 grains and the average of disease infection rate was 48.41 % and disease index was 3.41, growth period of 78 and 101 days were the key period for potato original seed yield and scab disease in the research of acidity mediated experiments.
- Subjects
PLANT breeding; POTATO seeds; SEED potatoes; SEED yield; STATISTICAL correlation; POTATO yields; POTATOES; TUBERS
- Publication
Southwest China Journal of Agricultural Sciences, 2020, Vol 33, Issue 12, p2814
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnski.scjas.2020.12.018