Effects of deficit irrigation and kaolin application on vegetative growth and fruit traits of two early ripening apple cultivars

Background Drought is one of the main serious problems for agriculture production which its intensity is increasing in many parts of the world, hence, improving water use efficiency is a main goal for sustainable agriculture. Results Growth indices including relative shoot length growth (SL), relati...

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Bibliographic Details
Published in:Biological research Vol. 52; no. 1; pp. 43 - 12
Main Authors: Faghih, Somayeh, Zamani, Zabihollah, Fatahi, Reza, Liaghat, Abdolmajid
Format: Journal Article
Language:English
Published: London BioMed Central 12.08.2019
BioMed Central Ltd
Sociedad de Biología de Chile
BMC
Subjects:
Agricultural research
Antioxidant activity
Apples
BIOLOGY
Biomedical and Life Sciences
Cell Biology
Developmental Biology
Kaolin
Life Sciences
Methods
Microbiology
Neurosciences
Physiological aspects
Plant hardiness
Plant Sciences
Research Article
Ripening (Botany)
Sustainable agriculture
Total phenolic content
Water stress
Water use efficiency
Iran
Total phenolic content
Water use efficiency
Water stress
Antioxidant activity
ISSN:0717-6287, 0716-9760, 0717-6287
Online Access:Get full text
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Summary:Background Drought is one of the main serious problems for agriculture production which its intensity is increasing in many parts of the world, hence, improving water use efficiency is a main goal for sustainable agriculture. Results Growth indices including relative shoot length growth (SL), relative stem diameter increase (SD) and relative trunk cross sectional area growth (TCSA) measured at the start and end of the season decreased by reducing the irrigation level. Chlorophyll index (CI) was decreased at 70% crop evapotranspiration, however water use efficiency (WUE), leaf and fruit total phenolic content (TPC), and fruit anthocyanin content (AC) were among the traits that showed increment by water deficit stress in both cultivars. Shafi-Abadi cultivar showed to be more sensitive to the water stress than ‘Golab’. Kaolin treatment improved SL, SD and CI traits, but this increase was statistically significant only for SD at 5% level. Kaolin had no significant effect on yield and water use efficiency (WUE), however, it had negative effect on yield efficiency (YE). Kaolin treatments also significantly increased fruit and leaf TPC ( P  < 0.01) but had no effect on leaf and fruit total antioxidant activity (AA), as well as fruit anthocyanin content (AC) and soluble proteins (SP). Conclusions Irrigation at 85% ETc showed better results than 100% and 70% ETc levels for yield attributes. It seems that the more pronounced effect of kaolin on vegetative traits but not on the fruits, might be attributed to the early ripening and harvest time of the examined cultivars.
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ISSN:0717-6287
0716-9760
0717-6287
DOI:10.1186/s40659-019-0252-5