摘要
钠盐胁迫严重制约着甘肃中东部地区苹果的生产。本研究以甘肃省秦安县大田生长的‘金冠’苹果为试材,用正常果树和盐碱胁迫果树对比方法,研究了自然条件下钠盐胁迫对果树整个生育期体内各器官(根系、枝条、叶片、花、果实)钠含量的影响。结果表明:钠盐胁迫下,果树根系内Na+含量为1800mg/kg,是正常果树的2倍。花内Na+含量为700mg/kg,是正常果树的1.4倍。在整个生育期,果树枝条内Na+含量变化在800～1400mg/kg,大约是正常果树的2～4倍;叶片内钠含量变化在1700～2500mg/kg之间,是正常果树的3.4～8.5倍;果实钠含量在1200～1500mg/kg之间,是正常果树的2.1～12倍。本研究科学地提出苹果花期属于钠盐潜在胁迫期。
Sodic salinity stress was severly affected the production of apple in middle east region of Gansu Province. ＇Golden Delicious＇ glowed in farmland in Qin＇an County of Gansu Province was used as the experiment material. The effects on the sodium content of apple roots, bronches, leaves, flowers and fruit during the growth period were investigated. The results showed that the content of sodium was 1800mg/kg in root, 800 - 1400mg/kg in branches, 1700 - 2500mg/kg in leaves, 700mg/kg in flowers, 1200- 1500mg/kg in fruits of trees growing under sodic salinity stress, which was 2 times, 3.4 - 8.5 times, 1.4 times and 2.1 - 12 times of trees growing under normal condition, respectively. And sodic salinity latency stress phase is thus brought forward in apple florescence.
出处
《核农学报》
CAS
CSCD
北大核心
2009年第2期354-357,184,共5页
Journal of Nuclear Agricultural Sciences
基金
甘肃省自然科学研究基金项目(0803KJZA040)
甘肃省科技厅事业费项目(QS031-C31-23)
国家科技成果重点推广项目(2005EC000335)
关键词
苹果树
钠盐胁迫
钠累积
apple trees
sodic salinity stress
sodium accumulation
