Effects of Spraying Foliar Selenium on Selenium Absorption and Accumulation in Various Parts of Garlic During Swelling Period
[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 Se-enriched garlic.[Method]Taking Jiudu Garlic as the research object,field experiments were adopted to study the effects of foliar spraying with different concentrations of Na2SeO3(0.11 g/L,0.22 g/L and 0.33 g/L)and Na2SeO4(0.11 g/L,0.22 g/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,pseudostems,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 Na2SeO4 was higher than that of Na2SeO3 treatment,and foliar spraying with 0.33 g/L Na2SeO4 had the most significant effect.Compared with CK,the foliar spraying with 0.33 g/L Na2SeO4 for the third time resulted in the highest Se content in garlic roots,pseudostems,bulbs and one leaf,which were 1.69 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 Na2SeO3 and Na2SeO4,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 Na2SeO4 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 Na2SeO4 for the first time.[Conclusion]Foliar spraying with 0.33 g/L Na2SeO4 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.
seleniumNa2SeO3Na2SeO4garlicswelling periodbulbfoliar sprayingabsorption and accumu-lation
万方数据
维普
