摘要
【目的】探明叶面喷施硒(Se)大蒜膨大期不同器官的Se含量及其分配规律,为富硒大蒜的营养调控和产品开发提供依据。【方法】以九都大蒜为研究对象,采用田间试验方法,研究膨大初期(第1次)、膨大中期(第2次)和膨大后期(第3次)叶面喷施不同浓度Na_(2)SeO_(3) (0.11 g/L、0.22 g/L和0.33 g/L)和Na_(2)SeO_(4) (0.11 g/L、0.22 g/L和0.33 g/L)溶液对膨大期大蒜根、假茎、鳞茎和叶Se含量及其分配规律的影响。【结果】不同处理大蒜根、假茎、鳞茎和不同叶位的Se含量均随喷施浓度及次数的增加而增加,且不同浓度Na_(2)SeO_(4)处理大蒜各器官的Se含量均高于Na_(2)SeO_(3)处理,以叶面喷施0.33 g/L Na_(2)SeO_(4)的效果最显著。与CK比,第3次叶面喷施0.33 g/L Na_(2)SeO_(4),大蒜根、假茎、鳞茎和1叶的Se含量达最大,分别为1.69μg/g、3.47μg/g、2.13μg/g和6.99μg/g。且不同浓度Na_(2)SeO_(3)和Na_(2)SeO_(4)处理大蒜叶片和根部的Se含量分配比显著降低,假茎和鳞茎显著升高,其中,第3次叶面喷施0.33 g/L Na_(2)SeO_(4)时,鳞茎Se含量分配比(83.07%)较高,与第1次叶面喷施0.11 g/L Na_(2)SeO_(4) (85.64%)的差异不大。【结论】大蒜膨大初期、膨大中期和膨大后期叶面喷施0.33 g/L Na_(2)SeO_(4)溶液提高可食部分鳞茎硒含量的效果最佳。
【Objective】The Se content and distribution patterns in different organs of garlic spraying foliar Se during swelling period were explored,which provided the basis for the nutritional regulation and product development of Seenriched garlic.【Method】Taking Jiudu Garlic as the research object,field experiments were adopted to study the effects of foliar spraying with different concentrations of Na_(2)SeO_(3)(0.11 g/L,0.22 g/L and 0.33 g/L) and Na_(2)SeO_4(0.11 g/L,0.22g/L and 0.33 g/L) solutions during the initial swelling period(the first time),middle swelling period(the second time) and late swelling period(the third time) on the Se content and distribution patterns of roots,pseudostems,bulbs and leaves of garlic during swelling period.【Result】The Se content in garlic roots,pseudo stems,bulbs and different leaf positions increased with the increase of spraying concentration and frequency in different treatments.The Se content in various organs of garlic treated with different concentrations of Na_(2)SeO_(4) was higher than that of Na_(2)SeO_(3) treatment,and foliar spraying with 0.33 g/L Na_(2)SeO_(4) had the most significant effect.Compared with CK,the foliar spraying with 0.33 g/L Na_(2)SeO_(4) for the third time resulted in the highest Se content in garlic roots,pseudostems,bulbs and one leaf,which were1.69 μg/g,3.47 μg/g,2.13 μg/g and 6.99 μg/g,respectively.Moreover,the distribution ratio of Se content in garlic leaves and roots significantly decreased when treated with different concentrations of Na_(2)SeO_(3) and Na_(2)SeO4,while the distribution ratio of Se content in pseudostems and bulbs significantly increased.Among them,the Se content distribution ratio in bulbs was higher(83.07%) when the foliar sprayed with 0.33 g/L Na_(2)SeO_(4) for the third time,and there was not much difference from the Se content distribution ratio in garlic bulbs(85.64%) when the foliar sprayed with 0.11 g/L Na_(2)SeO_(4) for the first time.【Conclusion】Foliar spraying with 0.33 g/L Na_(2)SeO_(4) solution during initial swelling period,middle swelling period and late swelling period of garlic has the best effect on increasing the Se content of edible garlic bulbs.
作者
黄向杰
王真
吴琼
刘月红
张联合
HUANG Xiangjie;WANG Zhen;WU Qiong;LIU Yuehong;ZHANG Lianhe(College of Agriculture,Henan University of Science and Technology,Luoyang,Henan 471023,China)
出处
《贵州农业科学》
CAS
2024年第12期28-34,共7页
Guizhou Agricultural Sciences
基金
国家自然科学基金项目“水稻NAC转录因子OsPS1调控衰老叶片中硒代蛋氨酸向籽粒转运的分子机制研究”(U1904114)。
