山西农业大学学报（自然科学版）2018，Vol.38Issue(6)：35-42,8.DOI:10.13842/j.cnki.issn1671-8151.201801011
外源硒对岚皋花魔芋生长发育的影响
The influence of exogenous selenium on the growth and development rate of LanGao konjac
摘要
Abstract
[Objective] This study was conducted to investigate the effect of selenium on the growth and development of the local konjac species in Langao .[Methods] The influence of exogenous selenium at different concentrations on the developmental rate of konjac was determined by incorporating sodium selenite at different concentrations into potting soil ,and parameters of developmental and physiological features were measured at different time points .[Results] Study showed that : (1 ) Stem diameter and leave area of plants were reached the greatest value at 1.88 cm and 50.25 cm ,respectively with the concentration of selenium at 6.25 mg·kg - 1 .And plants showed the highest height at 49.6 cm when treated with selenium in the range of 6.25 ～ 25 mg·kg - 1 .(2) The contents of chlorophyll a and total chlorophyll reached up to 4.64 mg · g - 1 and 5.97 mg · g - 1 , respectively when the concentration of selenium was 25 mg·kg - 1 .And ,the content of chlorophyll b fluctuated with the increase of selenium concentrations ,but no significant difference was observed among treatments .(3) The content of proline reached the maximum value at 86.14 ug·g - 1 when the concentration of selenium was 50 mg·kg - 1 .Furthermore ,the content of malondialdehyde was decreased to a minimum value at 0.07 mmol·g - 1 when the concentration of selenium within the scope of 6.25 ～ 12.5 mg·kg - 1 .(4)The biggest fresh weight of konjac fruit at 72.9 g was produced in the range of 12.5 ～ 25 mg·kg - 1 of selenium concentration ,while KGM of konjac fruit was the highest at 46.61％ with the selenium concentration at 6.25 mg·kg - 1 .Selenium content in bulbs was reached up to 200 mg·kg - 1 when selenium concentration incorporated was 41.54 mg·kg - 1 .[Conclusion]In summary ,the appropriate seleni-um content can promote the growth of konjac ,and the optimal amount of soil selenium was determined at 6.25 ～ 25 mg·kg - 1 .关键词
亚硒酸钠/花魔芋/KGM/含硒量Key words
Sodium Selenite/Flower Konjac/KGM/Content of Selenium分类
农业科技引用本文复制引用
蔡阳光,覃剑锋,陈国爱,郭邦利,段龙飞..外源硒对岚皋花魔芋生长发育的影响[J].山西农业大学学报（自然科学版）,2018,38(6):35-42,8.基金项目
陕西省农业协同创新联盟与推广联盟科技项目(LM20160010) （LM20160010）
