کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6374258 | 1645594 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphorus uptake and utilization efficiency in response to potato genotype and phosphorus availability
ترجمه فارسی عنوان
راندمان جذب و مصرف فسفر در پاسخ به ژنوتیپ سیب زمینی و فسفر در دسترس است
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کلمات کلیدی
عملکرد گوشت خوک، کسب فسفر، نیاز فسفر داخلی، بهره وری استفاده از فسفر، محصول،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Increased phosphorus (P) use efficiency (PUE) of potato production systems through P uptake and P utilization efficiency (PUPE and PUTE, respectively) is one of the main challenges for potato breeding and crop management programs. The aim of this study was to assess PUE, PUPE, PUTE and related traits in different potato genotypes (Solanum tuberosum L.) in response to P availability. Three field experiments were carried out in southern Chile in Andisol soils. In each experiment treatments were the factorial combination of (i) 22 genotypes of potatoes and (ii) two P fertilization rates (0 and 130 kg P haâ1, âP and +P, respectively). On average, biomass, P concentrations and P uptakes were reduced (P < 0.05) 32, 13 and 41% by âP, respectively. Conversely, âP increased PUTE (1.2-fold), PUPE (7-fold) and consequently PUE (8.3-fold). All traits were consistently affected (P < 0.01) by genotype (G), and the coefficient of variation (up to 47%) for each trait reflects the genotypic variability under both +P and âP. In all experiments, PUE and its main components were affected (P < 0.01) by P Ã G interaction. PUE was highly correlated with tuber yield, total biomass, P uptake and PUPE (P < 0.01; r = 0.74 â 0.99) but not to PUTE. In addition, PUPE was well correlated to yield and highly correlated with total P uptake (P < 0.01; r = 0.94-0.99). By contrast, PUTE was strongly negatively correlated (P < 0.01; r = â0.85 â 0.89) with P concentration in tubers. Genotypes from native (1 and 4), national cultivar (Puren-INIA, Yagana-INIA and Patagonia-INIA) and advanced line (R 89063 and RD 36-35) groups were among the best regarding PUE under âP. The PUPE was found to be more important than PUTE in determining PUE across a broad range of genotypes. Moreover, there is important genotypic variability in these traits with the potential to be used to improve PUE in potato crops through breeding and crop management programs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Agronomy - Volume 76, May 2016, Pages 95-106
Journal: European Journal of Agronomy - Volume 76, May 2016, Pages 95-106
نویسندگان
Patricio Sandaña,