为了明确绣球〔Hydrangea macrophylla(Thunb.)Ser.〕品种的耐寒性及筛选耐寒性评价主要指标,对40个绣球品种的低温半致死温度(LT_(50))进行比较和耐寒性分级,在此基础上,对5℃、0℃、-5℃、-10℃、-15℃、-20℃下耐寒品种‘小町’(‘Ko...为了明确绣球〔Hydrangea macrophylla(Thunb.)Ser.〕品种的耐寒性及筛选耐寒性评价主要指标,对40个绣球品种的低温半致死温度(LT_(50))进行比较和耐寒性分级,在此基础上,对5℃、0℃、-5℃、-10℃、-15℃、-20℃下耐寒品种‘小町’(‘Komachi’)、‘佳澄’(‘Kasumi’)、‘无尽夏’(‘Endless Summer’)和不耐寒品种‘甜蜜幻想’(‘Sweet Fantasy’)、‘灵感’(‘Inspiration’)、‘你我的情感’(‘You and Me Feelings’)叶的抗氧化酶活性及丙二醛(MDA)和渗透调节物质含量进行比较,并对这些耐寒指标进行相关性分析和主成分分析。结果表明:供试绣球品种LT 50的波动较大,变化范围为-36.68℃~-1.87℃,其中,‘小町’的LT_(50)最低,‘佳澄’、‘平瓣’(‘Flat’)、‘蒂亚娜’(‘Tijana’)、‘塞尔玛’(‘Selma’)、‘含羞叶’(‘Elbtal’)、‘花手鞠’(‘Stockings’)、‘蓝色多瑙河’(‘Blue Danube’)和‘无尽夏’的LT_(50)均低于-20℃。40个绣球品种的耐寒性被分成不耐寒、较耐寒、耐寒和强耐寒4个等级,分别包含13、18、8和1个品种。6个代表品种的过氧化氢酶(CAT)、多酚氧化酶(PPO)和超氧化物歧化酶活性及MDA、脯氨酸(Pro)、可溶性蛋白质(SP)和可溶性糖含量随温度降低基本呈先升高后降低的变化趋势。相关性分析结果表明PPO活性和Pro含量与LT_(50)呈极显著(P<0.01)负相关。主成分分析结果表明:前4个主成分的累计贡献率为81.212%,说明这4个主成分基本能够反映绣球品种的耐寒性;PPO活性、CAT活性、Pro含量和SP含量的负荷量绝对值分别在第1、第2、第3和第4主成分中最高。研究结果显示:供试绣球品种间的耐寒性差异较大,‘小町’等9个品种的耐寒性较强,能够在冬季温度偏低地区露天栽培,并可作为绣球耐寒品种选育的亲本。PPO活性、CAT活性、Pro含量和SP含量为绣球耐寒性评价的主要指标,尤其是PPO活性和Pro含量。展开更多
以摩西斗管囊霉(Funneliformis mosseae(T.H.Nicolson et Gerd.)C.Walker et A.Schüler)为供试菌,对0(CK)、80、160、240和320 mmol·L^(-1)NaCl胁迫下未接种组和接种组文冠果(Xanthoceras sorbifolium Bunge)根系菌根侵染率...以摩西斗管囊霉(Funneliformis mosseae(T.H.Nicolson et Gerd.)C.Walker et A.Schüler)为供试菌,对0(CK)、80、160、240和320 mmol·L^(-1)NaCl胁迫下未接种组和接种组文冠果(Xanthoceras sorbifolium Bunge)根系菌根侵染率、部分生长指标及叶片解剖结构、叶绿素荧光参数和叶绿素含量进行比较,并进行主成分分析和综合得分比较。结果表明:随着NaCl浓度升高,接种组的菌根侵染率逐渐降低;未接种组和接种组的单株干质量、地径、株高、实际光化学效率(ΦPSⅡ)、光化学猝灭系数(qP)、最大光化学效率(F_(v)/F_(m))和叶绿素含量逐渐降低,根冠比逐渐升高,叶片厚度、角质层厚度、栅栏组织厚度、海绵组织厚度、栅栏组织厚度与海绵组织厚度的比值、叶片组织结构紧密度和非光化学猝灭系数(NPQ)总体上先升高后降低,叶片组织结构疏松度总体上先略降低再升高后趋于稳定,上表皮厚度和下表皮厚度则波动变化。相同浓度NaCl胁迫下接种组的生长指标、多数叶片解剖结构指标、叶绿素荧光参数和叶绿素含量总体上高于未接种组。除角质层厚度和上表皮厚度外,摩西斗管囊霉和NaCl单一处理对所有检测指标的影响均在0.05、0.01或0.001水平具有统计学意义,但二者交互作用仅对叶片厚度、角质层厚度和非光化学猝灭系数的影响在0.01或0.001水平具有统计学意义。前3个主成分的特征值均大于1,累计贡献率为91.608%。相同浓度NaCl胁迫下接种组的综合得分高于未接种组。研究结果显示:摩西斗管囊霉可有效缓解NaCl胁迫对文冠果的伤害,提高其耐盐性。展开更多
The nutritional components in fresh flower bud of two forms of Hibiscus syriacus L. including form. elegantissimus and form. amplissimus were analyzed. The results show that water content of form. elegantissimus and f...The nutritional components in fresh flower bud of two forms of Hibiscus syriacus L. including form. elegantissimus and form. amplissimus were analyzed. The results show that water content of form. elegantissimus and form. amplissimus is 88.67% and 83.86%,respectively,and contents of crude protein,crude fat and crude ash are 1.58% and 2.85%,0.28% and 0.43%,0.88% and 1.36%,respectively. Contents of Ca,Fe and Zn in fresh flower bud of two forms are higher with a value of 990 and 2 600 μg·g-1,16 and 28 μg·g-1,6.0 and 7.2 μg·g-1,respectively,and both of two forms contain a certain content of Se. Contents of V A and V E are higher with a value of 1 570 and 4 370 IU·kg-1,11.5 and 18.9 IU·kg-1,respectively. There are sixteen amino acids including eight essential amino acids in fresh flower bud of two forms,and content of Glu is the highest and that of Met is the lowest with a value of 3.20 and 3.50 mg·g-1,0.26 and 0.31 mg·g-1,respectively. It is concluded that the basic nutritional components in fresh flower bud of form. elegantissimus and form. amplissimus are consistent,but the mineral and vitamin contents in the latter are higher than those in the former,while amino acid content in the latter is lower than that in the former. It is suggested that nutritional components in flower bud of different forms of Hibiscus syriacus are various,and it needs to make a deep and detailed study.展开更多
The constituents and contents of esterifing derivatives of organic and aqueous phases in extracts from Chaenomeles speciosa(Sweet) Nakai fruits were analysed by GC-MS.The results indicated that there were 15 and 17 co...The constituents and contents of esterifing derivatives of organic and aqueous phases in extracts from Chaenomeles speciosa(Sweet) Nakai fruits were analysed by GC-MS.The results indicated that there were 15 and 17 compounds in organic and aqueous phases,respectively.Besides there were common fatty acids,there were a lof of binary acids and ternary acids.The contents of malic acid and citric acid in aqueous and organic phases reached to 64.007%,70.492% and 30.305%,22.121% respectively.Therefore,malic acid and citric acid are the major constituents of organic acids in C.speciosa fruits.展开更多
文摘为了明确绣球〔Hydrangea macrophylla(Thunb.)Ser.〕品种的耐寒性及筛选耐寒性评价主要指标,对40个绣球品种的低温半致死温度(LT_(50))进行比较和耐寒性分级,在此基础上,对5℃、0℃、-5℃、-10℃、-15℃、-20℃下耐寒品种‘小町’(‘Komachi’)、‘佳澄’(‘Kasumi’)、‘无尽夏’(‘Endless Summer’)和不耐寒品种‘甜蜜幻想’(‘Sweet Fantasy’)、‘灵感’(‘Inspiration’)、‘你我的情感’(‘You and Me Feelings’)叶的抗氧化酶活性及丙二醛(MDA)和渗透调节物质含量进行比较,并对这些耐寒指标进行相关性分析和主成分分析。结果表明:供试绣球品种LT 50的波动较大,变化范围为-36.68℃~-1.87℃,其中,‘小町’的LT_(50)最低,‘佳澄’、‘平瓣’(‘Flat’)、‘蒂亚娜’(‘Tijana’)、‘塞尔玛’(‘Selma’)、‘含羞叶’(‘Elbtal’)、‘花手鞠’(‘Stockings’)、‘蓝色多瑙河’(‘Blue Danube’)和‘无尽夏’的LT_(50)均低于-20℃。40个绣球品种的耐寒性被分成不耐寒、较耐寒、耐寒和强耐寒4个等级,分别包含13、18、8和1个品种。6个代表品种的过氧化氢酶(CAT)、多酚氧化酶(PPO)和超氧化物歧化酶活性及MDA、脯氨酸(Pro)、可溶性蛋白质(SP)和可溶性糖含量随温度降低基本呈先升高后降低的变化趋势。相关性分析结果表明PPO活性和Pro含量与LT_(50)呈极显著(P<0.01)负相关。主成分分析结果表明:前4个主成分的累计贡献率为81.212%,说明这4个主成分基本能够反映绣球品种的耐寒性;PPO活性、CAT活性、Pro含量和SP含量的负荷量绝对值分别在第1、第2、第3和第4主成分中最高。研究结果显示:供试绣球品种间的耐寒性差异较大,‘小町’等9个品种的耐寒性较强,能够在冬季温度偏低地区露天栽培,并可作为绣球耐寒品种选育的亲本。PPO活性、CAT活性、Pro含量和SP含量为绣球耐寒性评价的主要指标,尤其是PPO活性和Pro含量。
文摘以摩西斗管囊霉(Funneliformis mosseae(T.H.Nicolson et Gerd.)C.Walker et A.Schüler)为供试菌,对0(CK)、80、160、240和320 mmol·L^(-1)NaCl胁迫下未接种组和接种组文冠果(Xanthoceras sorbifolium Bunge)根系菌根侵染率、部分生长指标及叶片解剖结构、叶绿素荧光参数和叶绿素含量进行比较,并进行主成分分析和综合得分比较。结果表明:随着NaCl浓度升高,接种组的菌根侵染率逐渐降低;未接种组和接种组的单株干质量、地径、株高、实际光化学效率(ΦPSⅡ)、光化学猝灭系数(qP)、最大光化学效率(F_(v)/F_(m))和叶绿素含量逐渐降低,根冠比逐渐升高,叶片厚度、角质层厚度、栅栏组织厚度、海绵组织厚度、栅栏组织厚度与海绵组织厚度的比值、叶片组织结构紧密度和非光化学猝灭系数(NPQ)总体上先升高后降低,叶片组织结构疏松度总体上先略降低再升高后趋于稳定,上表皮厚度和下表皮厚度则波动变化。相同浓度NaCl胁迫下接种组的生长指标、多数叶片解剖结构指标、叶绿素荧光参数和叶绿素含量总体上高于未接种组。除角质层厚度和上表皮厚度外,摩西斗管囊霉和NaCl单一处理对所有检测指标的影响均在0.05、0.01或0.001水平具有统计学意义,但二者交互作用仅对叶片厚度、角质层厚度和非光化学猝灭系数的影响在0.01或0.001水平具有统计学意义。前3个主成分的特征值均大于1,累计贡献率为91.608%。相同浓度NaCl胁迫下接种组的综合得分高于未接种组。研究结果显示:摩西斗管囊霉可有效缓解NaCl胁迫对文冠果的伤害,提高其耐盐性。
文摘The nutritional components in fresh flower bud of two forms of Hibiscus syriacus L. including form. elegantissimus and form. amplissimus were analyzed. The results show that water content of form. elegantissimus and form. amplissimus is 88.67% and 83.86%,respectively,and contents of crude protein,crude fat and crude ash are 1.58% and 2.85%,0.28% and 0.43%,0.88% and 1.36%,respectively. Contents of Ca,Fe and Zn in fresh flower bud of two forms are higher with a value of 990 and 2 600 μg·g-1,16 and 28 μg·g-1,6.0 and 7.2 μg·g-1,respectively,and both of two forms contain a certain content of Se. Contents of V A and V E are higher with a value of 1 570 and 4 370 IU·kg-1,11.5 and 18.9 IU·kg-1,respectively. There are sixteen amino acids including eight essential amino acids in fresh flower bud of two forms,and content of Glu is the highest and that of Met is the lowest with a value of 3.20 and 3.50 mg·g-1,0.26 and 0.31 mg·g-1,respectively. It is concluded that the basic nutritional components in fresh flower bud of form. elegantissimus and form. amplissimus are consistent,but the mineral and vitamin contents in the latter are higher than those in the former,while amino acid content in the latter is lower than that in the former. It is suggested that nutritional components in flower bud of different forms of Hibiscus syriacus are various,and it needs to make a deep and detailed study.
文摘The constituents and contents of esterifing derivatives of organic and aqueous phases in extracts from Chaenomeles speciosa(Sweet) Nakai fruits were analysed by GC-MS.The results indicated that there were 15 and 17 compounds in organic and aqueous phases,respectively.Besides there were common fatty acids,there were a lof of binary acids and ternary acids.The contents of malic acid and citric acid in aqueous and organic phases reached to 64.007%,70.492% and 30.305%,22.121% respectively.Therefore,malic acid and citric acid are the major constituents of organic acids in C.speciosa fruits.
