کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8487039 | 1551989 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of leaf carbon isotopes and functional traits in avocado reveals water-use efficient cultivars
ترجمه فارسی عنوان
ارزیابی ایزوتوپهای کربن برگ و صفات کاربردی در آوکادو نشان دهنده ارقام کارآمد مصرف آب است
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کلمات کلیدی
کشاورزی، ترکیب ایزوتوپ کربن، صفات کاربردی برگ، فتوسنتز، بهره وری استفاده از آب،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Plant water-use efficiency (WUE) describes the ratio of carbon gain to water loss during photosynthesis. It has been shown that WUE varies among crop genotypes, and crops with high WUE can increase agricultural production in the face of finite water supply. We used measures of leaf carbon isotopic composition to compare WUE among 24 cultivars of Persea americana Mill (avocado) to determine genotypic variability in WUE, identify potentially efficient cultivars, and to better understand how breeding for yield and fruit quality has affected WUE. To validate carbon isotope measurements, we also measured leaf photosynthetic gas exchange of water and carbon, and leaf and stem functional traits of cultivars with the highest and lowest carbon isotope composition to quantify actual WUE ranges during photosynthesis. Our results indicate large variation in WUE among cultivars and coordination among functional traits that structure trade-offs in water loss and carbon gain. Identifying cultivars of subtropical tree crops that are efficient in terms of water use is critical for maintaining a high level of food production under limited water supply. Plant functional traits, including carbon isotopes, appear to be an effective tool for identifying species or genotypes with particular carbon and water economies in managed ecosystems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 263, 1 August 2018, Pages 60-66
Journal: Agriculture, Ecosystems & Environment - Volume 263, 1 August 2018, Pages 60-66
نویسندگان
Aleyda Acosta-Rangel, Eleinis Ávila-Lovera, Mark E. De Guzman, Luis Torres, Roxana Haro, Mary Lu Arpaia, Eric Focht, Louis S. Santiago,