The Dynamics of Relation Oat Panicle with Grain Yield by Nitrogen

作     者：Rubia Diana Mantai José Antonio Gonzalez da Silva Emilio Ghisleni Arenhardt Airam Tereza Zago Romcy Sausen Manuel Osório Binello Vidica Bianchi Dionatas Rodrigues da Silva Luiz Michel Bandeira Rubia Diana Mantai;José Antonio Gonzalez da Silva;Emilio Ghisleni Arenhardt;Airam Tereza Zago Romcy Sausen;Manuel Osório Binello;Vidica Bianchi;Dionatas Rodrigues da Silva;Luiz Michel Bandeira

作者机构：Department of Exact Sciences and Engineering Regional University of the Northwest of Rio Grande do Sul State Ijuí Brazil Department of Agrarian Studies Regional University of the Northwest of Rio Grande do Sul State Ijuí Brazil Department of Crop Plants Federal University of Rio Grande do Sul Porto Alegre Brazil Department of Life Sciences Regional University of the Northwest of Rio Grande do Sul State Ijuí Brazil 

出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)

年 卷 期：2016年第7卷第1期

页      面：17-27页

学科分类：09[农学] 0901[农学-作物学] 

主　　题：Avena sativa L. Ureia Relation C/N Correlation and Path Analysis 

摘      要：The oat panicle components were changed by the forms of nitrogen use influencing productivity. The aim of the study was to determine the direct and indirect effects of oat panicle components on grain yield by N-fertilizer rates in succession systems of high and reduced release of N-residual. The study was conducted in the years 2013 and 2014 in a randomized complete block with four replications in a factorial 3 × 2, for nitrogen rates (30, 60 and 120 kg·ha-1) and oat cultivars (Barbarasul and Brisasul) the soybean/oat and corn/oat systems. The panicle weight and grain per panicle show greater sensitivity to the change of nitrogen rates. Grain yield was favored by the direct effect of harvest index panicle and indirect by grain weight per panicle. In the system soybean/ oat, the grain weight of panicle shows greater efficiency in promoting positive direct effects on grain yield.