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Ameliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress

Published in:Soil & Environment
VerfasserIn:Muhammad Ashraf
Muhammad Imtiaz
Muhammad Shahid Rizwan
Muhammad Mahzar Iqbal
Year of Publication: 2017-05-01
Publisher: Soil Science Society of Pakistan (SSSP)
Language: English
Online Access: DOAJ
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abstract_txt_mvCotton (Gossypium hirsutum L.) being moderately tolerant to salinity has been extensively grown in arid and semiarid regions where soil salinization is a major threat to plant growth and soil productivity. Excess salts in the growth medium may interfere with growth processes of cotton, leading to a severe decline in yield and fiber quality characteristics. Adequate mineral nutrient status of plants can provide an important strategy to improve plant tolerance to salinity. A pot experiment was planned to evaluate the ameliorative effects of additional potassium (K) applied at 50 and 100 mg K2O kg-1 soil as potassium sulfate against NaCl stress of 100 and 180 mM in cotton. The experiment was conducted according to completely randomized design with five replications. NaCl caused a significant (P ≤ 0.05) increase in shoot sodium (Na+) and chloride (Cl-) with a corresponding decrease in shoot K+, K+: Na+ ratio, calcium (Ca2+) and magnesium (Mg2+). Plant growth, yield and fiber quality characteristics were also declined significantly by increasing external NaCl concentration. Additional K reduced shoot Na + while increased K+, K+: Na+ ratio, Ca2+ and Mg2+ with the consequent improvement in plant growth, lint yield and yield attributes as well as fiber quality characteristics at both levels of NaCl. Results revealed that K nutrition improved shoot K+: Na+ ratio by 116 and 246% at NaCl100 while 188 and 294% at NaCl180 with K50 and K100, respectively as compared to NaCl treated plants without additional K. Likewise, lint yield was improved by 38.27 and 60.49% at NaCl100 while 75.12 and 136% at NaCl180 with K50 and K100, respectively compared to NaCl stressed plants without additional K. Ameliorative effects of K against NaCl stress were relatively more prominent at higher K application at both NaCl levels. In conclusion, K-induced decrease in Na+, increase in Ca2+, K+, K+: Na+ ratio, relative water content and membrane stability index provide protective mechanisms against NaCl stress. However, the results need to be confirmed under field conditions and the economic feasibility should be worked out.
articleParentIssue_str1
articleParentTitle_txtSoil & Environment
articleParentVolumeNo_str36
authorMuhammad Ashraf
participants_txtF_mvMuhammad Ashraf
Muhammad Imtiaz
Muhammad Shahid Rizwan
Muhammad Mahzar Iqbal
spellingShingleMuhammad Ashraf
Ameliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
MSI
Plant growth
Plant tolerance
Potassium
RWC
Salinity
Sodium
author_wildcardMuhammad Ashraf
author2Sher Muhammad Shahzad
author2StrSher Muhammad Shahzad
author2_roleVerfasserIn
author_additionalMuhammad Imtiaz
Muhammad Shahid Rizwan
Muhammad Mahzar Iqbal
author_additionalStrMuhammad Imtiaz
Muhammad Shahid Rizwan
Muhammad Mahzar Iqbal
author_additional_NameRoleGnd_str_mvMuhammad Imtiaz
VerfasserIn
NoGndId
Muhammad Shahid Rizwan
VerfasserIn
NoGndId
Muhammad Mahzar Iqbal
VerfasserIn
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author_roleVerfasserIn
author_sortMuhammad Ashraf
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contentType_str_mvtxt
datePublishSortStrict2017
doi_txt_mv10.25252/SE/17/31054
erscheinungsform_strUnselbständig
formatelectronic
idoai:doaj.org:article:a71a546a69524ba6bd00e783262d9d16
indexTimestamp_str1558592580100
issn2074-9546
2075-1141
languageeng
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publishDate2017-05-01
publisherSoil Science Society of Pakistan (SSSP)
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sysNo_txtoai:doaj.org:article:a71a546a69524ba6bd00e783262d9d16
titleAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
title_wildcardAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
title_fullAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
title_fullStrAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
title_full_unstemmedAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
title_shortAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
title_sortAmeliorative effects of potassium nutrition on yield and fiber quality characteristics of cotton (Gossypium hirsutum L.) under NaCl stress
topicMSI
Plant growth
Plant tolerance
Potassium
RWC
Salinity
Sodium
urlhttp://se.org.pk/File-Download.aspx?archivedpaperid=797
DOAJ
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