Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment
المؤلفون المشاركون
Tahir, Izzat Sidahmed Ali
Elbashier, Elfadil Mohamed Elyayeb
Ibrahim, Mohamed Ahmed Salih
Saad, Abu Sefyan Ibrahim
Abdalla, Osman Suliman
المصدر
International Journal of Agronomy
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-04-28
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
Improved nitrogen use-efficient cultivars could be the most economically beneficial and environmentally friendly approach to reduce pollution associated with excessive N fertilization.
The performance and genetic gain in grain yield and nitrogen use efficiency (NUE) of a historical set of 12 bread wheat cultivars released for a heat-stressed environment were investigated at four N levels (0 (N0), 43 (N43), 86 (N86), and 129 (N129) kg/ha) for two seasons.
Averaged across seasons, increasing N level from N0 to N43, N86, and N129 resulted in yield increases ranging from 4−45%, 13–69%, and 34–87% at N43, N86, and N129, respectively.
These yield increases were associated with increases in biomass (r = 0.86, P<0.01).
Regressing grain yield of cultivars released during 1960 to 2006 against the year of release showed no trend at N0 and positive nonsignificant trends at N43;.
however, significant positive trends were found at N86 and N129 with genetic gain rates of 12.65 and 15.76 kg ha−1 year−1, respectively.
This gain was associated with progresses in harvest index (HI) at N43, N86, and N129 but not at N0.
On the other hand, during the period from 1960 to 1990, the genetic gain in grain yield at N86 was 24.5 kg ha−1 year−1.
Regressing NUE against the year of release showed significant linear trends at N86 and N129 (R2 = 0.511 and R2 = 0.477, respectively), but not at N43.
The results indicate that breeders improved grain yield and NUE over 46 years under the heat-stressed environment of Sudan although the rate of increase in yield has been slowed down in recent years.
Further improvement in NUE might require broadening the genetic diversity and simultaneous evaluation at low and high N levels.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Tahir, Izzat Sidahmed Ali& Elbashier, Elfadil Mohamed Elyayeb& Ibrahim, Mohamed Ahmed Salih& Saad, Abu Sefyan Ibrahim& Abdalla, Osman Suliman. 2020. Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment. International Journal of Agronomy،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1167544
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Tahir, Izzat Sidahmed Ali…[et al.]. Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment. International Journal of Agronomy No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1167544
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Tahir, Izzat Sidahmed Ali& Elbashier, Elfadil Mohamed Elyayeb& Ibrahim, Mohamed Ahmed Salih& Saad, Abu Sefyan Ibrahim& Abdalla, Osman Suliman. Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment. International Journal of Agronomy. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1167544
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1167544
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر