低硼胁迫对柑橘枳橙砧木生长及营养生理的影响  

Effects of boron stress on seedling growth and nutrition physiology of navel orange root stock

作　　者：刘磊超[1] 姜存仓[1] 刘桂东[1] 董肖昌[1] 吴秀文[1] 

机构地区：[1]华中农业大学微量元素研究中心/农业部长江中下游耕地保育重点实验室,武汉430070

出　　处：《华中农业大学学报》2015年第3期64-68,共5页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(41271320);中央高校基本科研业务费专项(2013PY093)

摘　　要：以赣南＂纽荷尔＂脐橙拟推广的嫁接砧木（枳橙砧木）为试验材料,采用营养液培养的方法,探讨缺硼对枳橙砧木苗期生长及不同元素间的相互变化关系等方面的影响。结果表明：缺硼抑制枳橙苗的生长、减少干物质积累,且缺硼时叶片硼含量显著降低,新叶降幅为39.5%-49.1%,老叶降幅为33.3%-39.4%;缺硼时枳橙幼苗梢中的钾含量比加硼处理降低18%;缺硼导致枳橙梢部钙含量下降12%-49%,新叶下降11%-13%;镁含量则在缺硼时表现出升高的趋势;同时,硝态氮和可溶性蛋白质含量因硼胁迫出现明显的降低。Trifoliate orange which was the rootstock of Gannan ‘Newhall’ navel orange intended to promote as test material and the method of nutrient solution culture was used to study the effects of boron deficiency on the seedling growth of orange rootstock and the changes among different elements. The results showed that boron deficiency inhibited the growth of plants, decreased dry matter accumulation and significantly reduced the contents of boron in leaves. The new leaves reduced by 39.5%-49.1% and the old leaves reduced by 33.3%-39.4%. Potassium content in tips of trifoliate orange seedling under boron deficiency significantly reduced by 18% more than that under the normal boron level. Calcium con- tent in tips of trifoliate orange seedling and in new leaves under boron deficiency decreased 12%-49% and 11%-13%. Magnesium content had a tendency to increase under boron deficiency. The content of ni- trate and soluble protein significantly reduced under boron deficiency.

关 键 词：脐橙砧木 低硼胁迫 生长 营养生理 

分 类 号：S666[农业科学—果树学]