期刊论文

中文

中国农业科学

0578-1752

2016

49

18

3542-3550

10.3864/j.issn.0578-1752.2016.18.008

31372130:国家自然科学基金 31101596:国家自然科学基金 2012BAD15BO4:国家科技支撑计划 2014BAC09B01-01:国家科技支撑计划

本校为第一机构

【目的】研究不同氮效率油菜品种碳素累积转运差异,为揭示氮高效品种协调籽粒碳氮代谢矛盾、促进油分形成的机理提供理论依据。【方法】采用土培试验,以不同氮效率油菜品种为供试材料,在正常供氮和氮胁迫条件下,研究不同生育期(抽薹期、开花期、角果发育期和收获期)碳素累积与器官分布的差异,并用13C标记技术测定营养器官碳素向生殖器官的再分配比例与再分配量,分析碳素累积转运对籽粒产量形成与油分累积的影响。【结果】氮高效品种的籽粒油分含量略高于氮低效品种,但2种供氮水平下品种间差异均未达到显著水平,而油分产量氮高效品种显著高于氮低效品种;与氮胁迫处理相比,正常供氮处理的油分含量...

【Objective】The differences in carbon (C) accumulation and transport in Brassica napus with different nitrogen use efficiencies (NUE), were studied in order to supply a theoretical basis for elucidating the mechanism of high NUE genotypes in coordinating the contradiction between C and N metabolism and promoting oil formation.【Method】A soil culture experiment was conducted to study the differences of C accumulation and distribution in different organs of B. napus with different NUE at different growth stages (stem elongation stage, flowering...