Drought stress imposed at different reproductive stages influences growth, yield and seed composition of soybean

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dc.authorscopusid6601966979
dc.authorscopusid56277254300
dc.authorscopusid57198137575
dc.authorscopusid7004455003
dc.authorscopusid6505868229
dc.authorscopusid16238042500
dc.contributor.authorKirnak H.
dc.contributor.authorDogan E.
dc.contributor.authorAlpaslan M.
dc.contributor.authorCelik S.
dc.contributor.authorBoydak E.
dc.contributor.authorCopur O.
dc.date.accessioned2024-08-04T19:59:12Z
dc.date.available2024-08-04T19:59:12Z
dc.date.issued2008
dc.departmentİnönü Üniversitesien_US
dc.description.abstractSoybean (Glycine max L.) was grown in 2003 and 2004 to determine the effect of deficit irrigation given at five different reproductive stages on its growth, yield and seed composition. All soybean plots received full irrigation during the vegetative stage, while treatments were started during one of the reproductive stages (R1-2, beginning of flowering and full bloom; R3, beginning of pod; R4, full pod; R5, beginning of seed; R6, full seed and full irrigation) by completely stopping irrigation. In 2003 and 2004, the observed leaf area index ranged from 3.9 (R6) to 2.6 (control), and from 4.0 (R6) to 2.7 (control), respectively. Water stress resulted in reduced vegetative growth, leaf relative water content and leaf chlorophyll content. In 2003 and 2004 seed yields ranged from 1955 (R6) to 3684 kg ha1 (control), and from 1867 (R6)to 3952 kg ha-1 (control), respectively. Any water stress imposed on soybean plants in R3, R5 and R6 resulted in substantial yield reduction compared with the full irrigated control treatment. There were no significant effects of total chlorophyll and leaf relative water content on the oil and protein content of soybean seed. Water stress during the different reproductive stages (R 1-R6) significantly affected protein content, C18:0, C18:2 and C18:3 fatty acids. The lowest protein value was obtained in R 1-2, while the highest values were obtained from R4 in both years. Water stress effect imposed on any of the reproductive stages showed a significant effect on protein content but not seed oil. The highest protein content values were obtained from R4 treatment at 42.5% and 42.1 % in 2003 and 2004, respectively, while the lowest values were from R5 and R1-2 at 37.9% and 38.9% in 2003 and 2004, respectively. Average seed oil content in 2003 and 2004 were 14.61% and 16.12%, respectively.en_US
dc.identifier.endpage268en_US
dc.identifier.issn0031-7454
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-64549103389en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage261en_US
dc.identifier.urihttps://hdl.handle.net/11616/90454
dc.identifier.volume91en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherUniversity of the Philippines at Los Banosen_US
dc.relation.ispartofPhilippine Agricultural Scientisten_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOilen_US
dc.subjectProteinen_US
dc.subjectReproductive stagesen_US
dc.subjectSemi-arid climatic conditionsen_US
dc.subjectSoybeanen_US
dc.subjectWater stressen_US
dc.titleDrought stress imposed at different reproductive stages influences growth, yield and seed composition of soybeanen_US
dc.typeArticleen_US

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