中国农业科学 ›› 2021, Vol. 54 ›› Issue (21): 4635-4649.doi: 10.3864/j.issn.0578-1752.2021.21.013
岳盈肖1,2,何近刚2,赵江丽2,闫子茹2,程玉豆2,武肖琦2,王永霞1,*(),关军锋2,*()
收稿日期:
2021-01-11
接受日期:
2021-04-30
出版日期:
2021-11-01
发布日期:
2021-11-09
通讯作者:
王永霞,关军锋
作者简介:
联系方式:岳盈肖,E-mail: 基金资助:
YUE YingXiao1,2,HE JinGang2,ZHAO JiangLi2,YAN ZiRu2,CHENG YuDou2,WU XiaoQi2,WANG YongXia1,*(),GUAN JunFeng2,*()
Received:
2021-01-11
Accepted:
2021-04-30
Online:
2021-11-01
Published:
2021-11-09
Contact:
YongXia WANG,JunFeng GUAN
摘要:
【目的】比较窖藏和冷藏过程中,鸭梨果实品质、呼吸速率、乙烯释放速率、电子鼻特征、挥发性物质及其相关基因表达的差异,进一步解析两种贮藏方式对鸭梨香气物质形成的影响及其机制。【方法】鸭梨采收后以窖藏和冷藏两种方式贮藏,测定贮藏期间果实硬度、可溶性固形物含量(SSC)、可滴定酸(TA)含量、呼吸速率和乙烯释放速率,使用电子鼻检测挥发性物质变化,利用气质联用色谱(GC-MS)测定挥发性物质成分及含量,利用荧光定量PCR(Real-time PCR)技术分析乙烯生成(PbACS1、PbACO2)及其信号转导(PbETR1、PbETR2、PbERS1a、PbERS1b、PbEIN3、PbERF)、挥发性物质合成(PbAAT1、PbADH2、PbADH3、PbADH5、PbHPL、PbLOX1、PbLOX8)相关基因的表达量变化情况。【结果】冷藏期间,鸭梨果实硬度变化较小,SSC上升,TA含量下降。窖藏时,果实硬度下降比较明显,但对SSC的影响较小,而TA含量增加。与冷藏相比,窖藏下果实呼吸速率较高,乙烯释放高峰提前1个月出现,且其峰值较高。电子鼻可有效区分两种贮藏方式下的挥发性物质,其中W1W、W5S、W2W、W1S这4种传感器对挥发性物质区分起主要作用;窖藏期间果实挥发性物质较多。鸭梨果皮和果肉的挥发性物质包含醛类、酯类、醇类、萜类、烷烃类等,且果皮中含量较高;窖藏果皮和果肉、冷藏果皮和果肉中分别检出36种和33种、28种和24种挥发性物质,窖藏鸭梨较冷藏时生成更多的乙酯类化合物,其中己酸乙酯、辛酸乙酯、丁酸乙酯、(E,Z)2,4-癸二烯酸乙酯等为果皮主要香味物质,己酸乙酯、丁酸乙酯为果肉主要香味物质。相关基因的表达分析表明,与冷藏相比,窖藏明显上调鸭梨果皮和果肉ACC氧化酶(PbACO2)、脂氧合酶(PbLOX1)和醇酰基转移酶(PbAAT1)相关基因的表达,下调乙烯不敏感转录因子(PbEIN3)的表达。【结论】在贮藏3个月内,与冷藏鸭梨相比,窖藏条件明显促进乙烯生成(PbACO2)和香气合成(PbLOX1、PbAAT1)等基因的表达,此时果实具有较多的香气物质种类和较高含量,表现出香味浓郁的特点。
岳盈肖,何近刚,赵江丽,闫子茹,程玉豆,武肖琦,王永霞,关军锋. 窖藏和冷藏条件下鸭梨挥发性物质及其相关基因表达分析[J]. 中国农业科学, 2021, 54(21): 4635-4649.
YUE YingXiao,HE JinGang,ZHAO JiangLi,YAN ZiRu,CHENG YuDou,WU XiaoQi,WANG YongXia,GUAN JunFeng. Comparison Analysis on Volatile Compound and Related Gene Expression in Yali Pear During Cellar and Cold Storage Condition[J]. Scientia Agricultura Sinica, 2021, 54(21): 4635-4649.
表1
PEN3型电子鼻传感器阵列"
序列号 Order number | 传感器名称 Sensor name | 敏感化合物 Sensitive compound |
---|---|---|
1 | W1C | 芳香成分 Aromatic components |
2 | W5S | 灵敏度大,氮氧化合物 Broad range, oxynitride |
3 | W3C | 氨类、芳香成分 Ammonia, aromatic components |
4 | W6S | 氢化物 Hydrogen |
5 | W5C | 短链烷烃、芳香成分 Short chain alkanes, aromatic components |
6 | W1S | 甲烷 Methane |
7 | W1W | 硫化物、萜烯类 Sulphur-organic compound, terpenes |
8 | W2S | 醇类、醛酮Alcohol, aldehyde ketone |
9 | W2W | 有机硫化物、芳香成分 Organic sulfur compounds, aromatic components |
10 | W3S | 长链烷烃 Long chain alkanes |
表2
定量PCR引物序列"
基因 Gene | 序列号 Genbank ID | 引物序列 Primer sequence |
---|---|---|
PbACS1 | XM_018643584.1 | 5′-GGGCACCACAATGACCAGA-3′ |
5′-GTGAACTCGCTGCCAAAC-3′ | ||
PbACO2 | XM_009357643.1 | 5′-GGTTCAAGGAAATGGTGGC-3′ |
5′-AGCCTTCTTTAGATAGCCCTTC-3′ | ||
PbETR1a | XM_009367968.2 | 5′-AGTCTAAGCAGCCTTTTGCACC-3′ |
5′-TGCTGACCCCATTATCATCC-3′ | ||
PbETR1b | XM_009350325.2 | 5′-GATCCTGGAGAATCATCAGAGC-3′ |
5′-GCAGTTACAATGCAACCAAGC-3′ | ||
PbERS1 | XM_009380469.1 | 5′-CGTTGCATTCATCGTCAAACTG-3′ |
5′-TCGATGAACTTGCGCCAAATCG-3′ | ||
PbERS2 | KF188466.1 | 5′-CGTTGCATTCATCGTCCAACTA-3′ |
5′-TTCGACGAAGTTACTCCGAAAC-3′ | ||
PbEIN3 | XM_009340977.2 | 5′-CCCGTGACATCTTCTTCCTG-3′ |
5′-TGACTTTCTTTCGGCTCCC-3′ | ||
PbERF | XM_009380720.2 | 5′-TTGAAAGAGTCCGCAAATCG-3′ |
5′-CCAAGTAATCCGTTCCCAAA-3′ | ||
PbAAT1 | XM_018649523.1 | 5′-TGGTGCCAAGGAGATGAGAGTC-3′ |
5′-TTGTGGTGCTTTCCCCGTG-3′ | ||
PbADH2 | KU507380.1 | 5′-CGGAAACTACAAGACTCGAA-3′ |
5′-CGGATTATGCAACGAAGAC-3′ | ||
PbADH3 | XM_009362449.1 | 5′-TGTGACCTCCTCAGGATAAA-3′ |
5′-GCCAAGGGATTGATCTTAG-3′ | ||
PbADH5 | XM_009379426.2 | 5′-CGCCGACATCAACAAAGCAT-3′ |
5′-TGCAATACCCTCAAAATCCATGT-3′ | ||
PbHPL | XM_009348862.2 | 5′-CGGTGTTCCGCACAAATA-3′ |
5′-AAGCGCAGGTCCTCAAGTC-3′ | ||
PbLOX1 | XM_009378388.2 | 5′-TGAGCCATTTGTGATAGCGG-3′ |
5′-TGTGAGAACTTGTCGTGCGG-3′ | ||
PbLOX8 | XM_009378384.2 | 5′-GCCACAAACAGGCAACTAA-3′ |
5′-CTCGGTGAAATTCCAATCC-3′ | ||
PbAcitin2 | GU830959 | 5′-GGACATTCAACCCCTCGTCT-3′ |
5′-ATCCTTCTGACCCATACCAACC-3′ |
表3
鸭梨窖藏、冷藏期硬度、可溶性固形物和可滴定酸含量变化"
贮藏时间(月) Storage time (Month) | 硬度 Firmness (kg·cm-2) | 可溶性固形物 SSC (%) | 可滴定酸 TA (%) | |||
---|---|---|---|---|---|---|
窖藏 Cellar storage | 冷藏 Cold storage | 窖藏 Cellar storage | 冷藏 Cold storage | 窖藏 Cellar storage | 冷藏 Cold storage | |
0 | 6.25±0.28bc | 6.25±0.28bc | 12.81±0.40d | 12.81±0.40d | 1.32±0.03c | 1.32±0.03c |
1 | 6.81±0.05a | 6.21±0.24bc | 13.73±0.22abc | 13.35±0.09bcd | 1.50±0.02a | 1.14±0.02d |
2 | 6.49±0.13ab | 6.17±0.26bc | 13.15±0.31cd | 13.86±0.37ab | 1.38±0.01b | 1.10±0.02de |
3 | 5.75±0.25c | 6.53±0.12ab | 13.80±0.52abc | 14.24±0.31a | 1.49±0.03a | 1.09±0.03f |
表4
窖藏、冷藏鸭梨果皮中挥发性成分变化"
种类 Kind | 化合物名称 Compound name | 贮藏初期 Initial storage | 窖藏时间(月)Cellar storage time (Month) | 冷藏时间(月)Cold storage time (Month) | ||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 1 | 2 | 3 | |||
醛类 Aldehyde | 己醛 Hexanal | 610.83±176.46a | 571.58±255.42ab | - | - | 473.64±35.71ab | 381.78±44.51ab | 240.45±19.71b |
(E)-2-己烯醛 (E)-2-Hexenal | 128.13±29.39d | 401.05±60.10a | 352.44±64.79ab | 435.08±76.48a | 397.47±35.38a | 265.22±26.89bc | 234.52±11.08c | |
壬醛 Nonanal | 20.93±6.37c | 54.78±5.43a | 32.92±1.63b | 23.42±4.00c | 32.81±3.86b | 20.73±0.66c | 17.48±0.96c | |
1,1-二甲氧基己烷 1,1-dimethoxyhexane | 4.82±2.49b | 23.69±5.92a | 7.94±3.45b | - | 3.36±1.34b | - | - | |
癸醛 Decanal | 1.63±0.46c | 18.93±5.60b | 29.01±3.99a | 20.12±3.54b | 3.09±0.92c | 3.10±0.02c | 3.16±1.34c | |
(E,Z)-2,4-癸二烯醛 (E,Z)- 2,4-Decadienal | - | 13.05±4.17a | 3.98±0.89b | 10.09±2.22ab | - | - | - | |
总量 Total | 766.34 | 1083.08 | 426.29 | 488.70 | 910.38 | 670.83 | 495.61 | |
酯类 Esters | 丁酸甲酯Butanoic acid methyl ester | - | - | - | - | 17.09±2.59a | 10.97±2.96a | 11.49±4.56a |
己酸甲酯 Hexanoic acid methyl ester | - | 14.80±1.46b | 35.84±1.56a | 29.13±6.36a | - | - | - | |
辛酸甲酯 Octanoic acid methyl ester | 2.77±0.87c | 149.02±22.37b | 402.74±61.97a | 319.80±69.75a | - | 4.97±2.05c | - | |
水杨酸甲酯 Salicylic acid methyl ester | 3.66±0.30 | - | - | - | - | - | - | |
3-甲硫基-(E)-2-丙烯酸乙酯 3-(methylthio)-(E)-2-propenoate- ethyl ester | - | 174.72±13.53a | 158.19±20.90a | 75.61±12.99b | - | - | - | |
丁酸乙酯 Butanoic acid ethyl ester | - | 861.78±127.76b | 2234.49±246.21a | 1211.75±174.70b | - | - | - | |
(E)-2-甲基-2-丁烯酸乙酯 (E)-2-Methyl-2-butenoic acid ethyl ester | - | 27.85±2.98a | 26.73±5.05a | 11.51±4.56b | - | - | - | |
戊酸乙酯 Pentanoic acid ethyl ester | - | 26.85±2.19 | 51.50±5.19 | - | - | - | - | |
己酸乙酯 Hexanoic acid ethyl ester | - | 4615.33±100.96c | 8448.46±307.96a | 6463.16±710.28b | - | 86.30±29.03d | - | |
2-己烯酸乙酯 2-Hexenoic acid ethyl ester | - | 91.16±1.61c | 271.51±9.38a | 171.49±20.07b | - | - | - | |
庚酸乙酯 Heptanoic acid ethyl ester | - | 45.29±3.59b | 95.29±7.35a | 85.59±14.12a | - | - | - | |
辛酸乙酯 Octanoic acid ethyl ester | - | 1774.77±279.96b | 2746.27±345.26a | 2411.39±412.61a | 1.18±0.13c | 15.35±0.73c | - | |
4-辛烯酸乙酯 4-Octenoic acid ethyl ester | - | 15.49±2.21c | 37.35±5.86b | 67.77±12.05a | - | 2.36±0.48c | - | |
癸酸乙酯 Decanoic acid ethyl ester | - | 45.03±8.91b | 199.58±248.81a | 251.87±29.21a | - | - | - | |
(E)-2-癸烯酸乙酯 (E)-2-Decenoic acid ethyl ester | - | - | 8.03±5.79 | - | - | - | ||
(E)-4-癸烯酸乙酯 (E)-4-Decenoic acid ethyl ester | - | - | 35.05±6.68 | 41.69±12.71 | - | - | - | |
(E,Z)-2,4-癸二烯酸乙酯 (E,Z)-2,4-Decadienoic acid ethyl ester | - | 80.09±11.23c | 1123.28±114.87b | 1482.82±208.68a | - | - | - | |
苯甲酸乙酯 Benzoic acid ethyl ester | - | 6.21±1.18 | - | - | - | 3.48±0.15 | - | |
苯乙酸乙酯 Benzene-acetic acid ethyl ester | - | - | - | 5.25±1.12 | - | - | - | |
2,2,4-三甲基-1,3-戊二醇二异丁酸酯 2,2,4-Trimethyl-1,3-pentanediol di-isobutyrate | 2.68±1.90b | - | - | - | 50.79±4.43a | 32.39±20.10a | 27.55±16.89ab | |
种类 Kind | 化合物名称 Compound name | 贮藏初期 Initial storage | 窖藏时间(月)Cellar storage time (Month) | 冷藏时间(月)Cold storage time (Month) | ||||
1 | 2 | 3 | 1 | 2 | 3 | |||
己二酸二异丁酯 Hexanedioic acid di-isobutyl ester | - | - | - | - | - | - | 4.72±1.66 | |
乙酸己酯 Acetic acid hexyl ester | 19.51±3.21f | 426.39±5.87a | 285.42±9.13b | 65.37±8.27e | 79.11±6.79e | 140.07±18.12c | 101.87±8.44d | |
丁酸己酯 Butanoic acid hexyl ester | - | - | - | - | - | 5.73±1.34 | - | |
乙酸庚酯 Acetic acid heptyl ester | - | 22.87±3.35 | - | - | - | - | - | |
乙酸辛酯 Acetic acid octyl ester | - | 317.87±44.09a | 179.21±22.90b | 64.47±8.75c | - | 5.97±0.72d | 1.88±0.40d | |
乙酸癸酯 Acetic acid decyl ester | - | - | 5.54±0.70 | - | - | - | - | |
总量Total | 28.62 | 8695.51 | 16336.46 | 12766.68 | 148.17 | 307.59 | 147.51 | |
烷烃类 Alkanes | 癸烷 Decane | 1014.95±681.18a | - | - | - | 1191.52±414.35a | 567.77±39.08a | 631.00±134.43a |
十一烷 Undecane | 3.65±2.56 | - | - | - | - | - | - | |
十三烷 Tridecane | - | - | - | - | - | - | 1.14±0.19 | |
十四烷 Tetradecane | 6.24±1.84 | - | - | - | 6.13±1.24 | - | - | |
十五烷 Pentadecane | 6.15±2.34 | - | - | - | - | - | - | |
十六烷 Hexadecane | 4.92±2.59 | - | - | - | - | - | - | |
二十烷 Eicosane | 0.76±0.42b | - | - | - | 7.11±0.55b | 24.96±6.46a | 3.90±0.49b | |
总量 Total | 1036.66 | 0.00 | 0.00 | 0.00 | 1204.75 | 592.73 | 636.04 | |
醇类 Alcohols | 正辛醇 1-Octanol | 3.91±1.12d | 206.41±12.57a | 181.77±10.68b | 91.63±9.57c | - | 8.38±1.00d | - |
正癸醇 1-Decanol | - | 143.13±18.99c | 510.37±44.30a | 257.50±22.23b | - | - | - | |
2,4-癸二烯醇 2,4-Decadienol | - | 78.90±10.39a | 57.93±9.67b | 18.61±1.33c | 2.47±0.49d | 5.87±0.82d | 1.85±0.05d | |
(Z)-4-癸烯-醇 (Z)-4-Decenol | - | 163.83±28.42c | 671.34±52.60a | 501.19±63.90b | 3.41±0.91d | 11.02±1.50d | 4.95±0.54d | |
1,10-癸二醇 1,10-Decanediol | - | - | - | 25.25±0.59 | - | - | - | |
总量 Total | 3.91 | 592.27 | 1421.41 | 894.18 | 5.88 | 25.28 | 6.80 | |
萜类 Terpenoids | (Z,E)-金合欢烯 (Z,E)-3,7,11-Trimethyl-1,3,6,10-dodecatetraene | - | - | - | - | 81.19±4.60c | 234.64±10.19a | 100.92±8.77b |
β-法尼烯 β-Farnesene | - | 18.08±2.96a | 15.06±1.77a | 17.205±3.90a | - | 5.09±0.17b | 2.00±0.42b | |
α-法尼烯α-Farnesene | 8.06±1.49e | 21147.84±1920.87a | 16616.83±1260.42b | 16321.98±2382.14b | 4685.73±547.41d | 10898.67±1476.44c | 4775.20±407.78d | |
总量Total | 8.06 | 21165.91 | 16631.89 | 16339.19 | 4766.92 | 11138.40 | 4878.12 | |
其他 Others | 丁香酚2-Methoxy-3-(2-propenyl)-phenol | - | - | - | 8.01±2.80 | - | - | - |
4-烯丙基苯酚4-(2-Propenyl)-phenol | - | - | - | - | 4.70±0.33c | 27.93±1.92a | 10.29±1.04b | |
6-甲基-5-庚烯-2-酮 6-Methyl- 5-hepten-2-one | 2.91±1.20e | 47.97±1.73c | 71.86±4.34b | 106.19±11.01a | 7.51±0.70e | 33.18±2.92d | 33.43±2.44d | |
总量 Total | 2.91 | 47.97 | 71.86 | 114.19 | 12.22 | 61.11 | 43.72 | |
挥发性成分总量 Total amount of volatile components | 1846.50 | 31584.73 | 34887.91 | 30602.95 | 7048.31 | 12795.93 | 6207.79 |
表5
窖藏、冷藏鸭梨果肉中挥发性成分变化"
种类 Kind | 化合物名称 Compound name | 贮藏初期 Initial storage | 窖藏时间(月)Cellar storage time (Month) | 冷藏时间(月)Cold storage time (Month) | ||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 1 | 2 | 3 | |||
醛类 Aldehydes | 己醛 Hexanal | 13.77±4.63a | - | - | - | 17.43±0.66a | 15.82±7.13a | 9.59±0.60a |
2-已烯醛 2-Hexenal | 0.60±0.29c | - | - | - | 6.48±0.18a | 2.43±1.00b | 3.48±0.93b | |
(E)-2-辛烯醛 (E)-2-Octenal | 0.59±0.02c | 3.27±0.75b | 5.95±0.63a | 6.03±0.12a | 2.93±0.24b | 2.38±0.56b | 3.09±0.38b | |
壬醛 Nonanal | 2.72±0.34c | 7.76±1.73bc | 12.26±5.68a | 9.27±0.47b | 8.17±0.79ab | 5.50±0.57bc | 4.14±0.66bc | |
(E)-2-壬烯醛 (E)-2-Nonenal | 0.47±0.10d | 3.59±1.19bc | 5.75±1.57a | 5.81±0.52a | 4.55±0.14ab | 3.41±0.79bc | 1.97±0.30cd | |
癸醛 Decanal | 0.78±0.05d | 2.69±0.53bcd | 8.72±2.97a | 5.61±0.81b | 4.26±0.63bc | 3.04±0.58bcd | 2.49±0.99cd | |
(E)-2-癸醛 (E)- 2-Decenal | 0.12±0.02c | 2.47±0.22a | - | - | 0.52±0.07b | 0.48±0.05b | 0.48±0.11b | |
(E, E)-2,4-壬二烯醛(E, E)-2,4-Nonadienal | - | - | - | - | 0.12±0.01 | - | - | |
庚醛 Heptanal | - | - | - | - | 0.54±0.06 | - | - | |
2-庚烯醛 2-Heptenal | - | - | - | - | 1.85±0.11 | - | - | |
总量 Total | 19.04 | 19.78 | 32.69 | 26.72 | 46.84 | 33.05 | 25.23 | |
酯类 Esters | 丁酸乙酯 Butanoic acid ethyl ester | - | 345.70±150.45b | 1164.28±476.33a | 339.46±81.35b | - | - | - |
乙酸丁酯 Acetic acid butyl ester | - | - | - | - | - | 6.95±2.99 | 1.95±0.48 | |
2-甲基丁酸乙酯 2-Methyl-butanoic acid ethyl ester | - | 58.71±21.63b | 179.79±58.74a | 70.37±13.25b | - | - | - | |
(E)-2-甲基-2-丁烯酸乙酯(E)-2-Methyl-2-butenoic acid ethyl ester | - | 9.67±1.11ab | 15.98±5.21a | 6.50±0.23c | - | - | - | |
戊酸乙酯 Pentanoic acid ethyl ester | - | 7.64±2.13b | 29.56±7.90a | 14.31±2.36b | - | - | - | |
己酸乙酯 Hexanoic acid ethyl ester | - | 561.10±113.48c | 3681.45±480.26a | 2763.89±96.90b | - | - | - | |
2-己烯酸乙酯 2-Hexenoic acid ethyl ester | - | 18.85±3.80c | 223.67±10.45a | 143.88±5.27b | - | - | - | |
庚酸乙酯 Heptanoic acid ethyl ester | - | 8.75±0.36b | 62.29±6.15a | 59.06±1.56a | - | - | - | |
辛酸乙酯 Octanoic acid ethyl ester | 0.17±0.04 b | 7.50±1.55b | 135.59±34.42a | 159.95±8.23a | 0.24±0.04b | - | - | |
(E)-2-辛烯酸乙酯 (E)-2-Octenoate-ethyl ester | - | 3.53±0.93b | 120.23±31.97a | 134.06±5.49a | - | - | - | |
4-辛烯酸乙酯 4-Octenoic acid ethyl ester | - | - | 3.33±1.00 | 6.39±0.43 | - | - | - | |
(E,Z)-2,4-癸二烯酸乙酯(E,Z)-2,4-Decadienoic acid ethyl ester | - | 2.42±0.32c | 142.47±7.18b | 186.42±13.75a | - | - | - | |
3-羟基己酸乙酯3-Hydroxy-hexanoic acid ethyl ester | - | - | 17.84±5.09 | 17.98±0.83 | - | - | - | |
3-甲硫基-2-丙烯酸乙酯3-(Methylthio)-(E)-2-propenoate ethyl ester | - | 25.46±0.69c | 80.42±6.86a | 32.55±3.56b | - | - | - | |
苯乙酸乙酯 Benzeneacetic acid ethyl ester | - | 0.61±0.03c | 1.94±0.13b | 2.59±0.24a | - | - | - | |
种类 Kind | 化合物名称 Compound name | 贮藏初期 Initial storage | 窖藏时间(月)Cellar storage time (Month) | 冷藏时间(月)Cold storage time (Month) | ||||
1 | 2 | 3 | 1 | 2 | 3 | |||
己酸丙酯 Hexanoic acid propyl ester | - | - | 1.87±0.57 | 1.47±0.06 | - | - | - | |
乙酸己酯 Acetic acid hexyl ester | 3.02±0.18 f | 104.95±7.55b | 202.30±4.81a | 38.98±2.12c | 8.15±0.26ef | 24.26±1.49d | 12.82±0.67e | |
乙酸庚酯 Acetic acid heptyl ester | - | 4.33±1.02a | 6.01±1.35a | 1.21±0.20b | - | 0.41±0.09b | - | |
乙酸辛酯 Acetic acid octyl ester | - | 19.35±4.09b | 48.95±12.59a | 11.92±0.93b | - | - | - | |
2,2,4-三甲基-1,3-戊二醇二异丁酸酯 2,2,4-Trimethyl-1,3-pentanediol diisobutyrate | 0.11±0.04c | 9.48±1.17bc | 27.55±8.56a | 19.65±13.23 ab | 6.66±1.89 bc | 7.16±4.12 bc | 4.23±0.87c | |
己二酸二异丁酯 Hexanedioic acid di-isobutyl ester | - | - | 3.51±1.56a | 3.75±2.61a | 0.40±0.19b | - | - | |
总量 Total | 3.31 | 1188.05 | 6149.01 | 4014.39 | 15.44 | 38.77 | 19.00 | |
烷烃类 Alkanes | 癸烷 Decane | 91.53±75.84a | - | - | - | 118.79±7.39a | 164.08±67.55a | 86.19±24.54a |
十四烷 Tetradecane | 0.32±0.04 | - | - | - | - | - | - | |
十六烷 Hexadecane | 0.13±0.03 | - | - | - | - | - | - | |
总量 Total | 91.97 | 0.00 | 0.00 | 118.79 | 164.08 | 86.19 | ||
醇类 Alcohols | 2-乙基己醇 2-Ethyl hexanol | 0.09±0.08b | 0.98±0.37a | - | - | 1.03±0.23a | 1.01±0.59a | 0.56±0.18ab |
正辛醇 Octanol | 0.19±0.06d | 9.56±1.73b | 26.29±1.45a | 6.63±0.75c | 0.28±0.04d | 0.95±0.06d | 0.25±0.08d | |
正癸醇 Decanol | - | 2.62±0.10c | 79.54±5.92a | 19.52±2.12b | - | - | - | |
(Z)-4-癸烯醇 (Z)-4-Decenol | - | 3.75±0.15c | 45.83±1.36a | 27.86±1.26b | - | - | - | |
2,4-癸二烯醇 2,4-Decadienol | - | 1.85±0.29 | 2.07±0.23 | - | - | - | - | |
总量 Total | 0.28 | 18.76 | 153.73 | 54.01 | 1.31 | 1.96 | 0.81 | |
萜类 Terpenoids | (Z,E)-金合欢烯 (Z,E)-3,7,11-Trimethyl-1,3,6,10-Dodecatetraene | - | 5.68±0.60c | 34.83±7.47a | 18.50±4.74b | 0.15±0.05c | 1.36±0.48c | 0.49±0.14c |
α-法尼烯α-Farnesene | - | 192.30±9.99b | 513.13±117.75a | 470.72±94.19a | 3.90±0.76c | 32.67±14.62c | 14.34±4.48c | |
总量 Total | 0.00 | 197.99 | 547.96 | 489.22 | 4.05 | 34.03 | 14.83 | |
其他 Others | 乙酸-2-甲氧基-4-(2-丙烯基)苯酚Acetate-2-methoxy-4-(2-propenyl)-phenol | - | - | - | - | - | - | 0.19±0.01 |
2-烯丙基苯酚 2-Allylphenol | - | - | - | - | - | 1.12±0.12 | 0.41±0.04 | |
(Z)-6,10-二甲基-5,9-十一碳二烯-2-酮(Z)-6,10-Dimethyl-5,9-Undecadien-2-one | 0.17±0.03a | - | - | - | 0.23±0.01a | 0.46±0.22a | 0.46±0.19a | |
6-甲基-5-庚烯-2-酮6-Methyl-5-Hepten-2-one | - | 1.14±0.24b | 3.59±1.28a | 4.45±0.27a | - | - | - | |
总量 Total | 0.17 | 1.14 | 3.59 | 4.45 | 0.23 | 1.57 | 1.06 | |
挥发性成分总量 Total amount of volatile components | 114.77 | 1425.71 | 6886.97 | 4588.78 | 186.65 | 273.46 | 147.12 |
表6
窖藏和冷藏下鸭梨乙烯生成及其信号转导、香气物质合成相关基因表达量之间相关性分析"
PbACS1 | PbACO2 | PbETR1 | PbETR2 | PbERS1 | PbERS2 | PbEIN3 | PbERF | PbAAT1 | PbADH2 | PbADH3 | PbADH5 | PbHPL | PbLOX1 | PbLOX6 | PbLOX8 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PbACS1 | 1.000 | |||||||||||||||
PbACO2 | 0.879** | 1.000 | ||||||||||||||
PbETR1 | 0.091 | 0.106 | 1.000 | |||||||||||||
PbETR2 | 0.867** | 0.914** | 0.100 | 1.000 | ||||||||||||
PbERS1 | 0.466 | 0.372 | 0.419 | 0.410 | 1.000 | |||||||||||
PbERS2 | 0.779** | 0.619* | 0.307 | 0.652** | 0.764** | 1.000 | ||||||||||
PbEIN3 | -0.077 | -0.428 | 0.369 | -0.307 | 0.230 | 0.118 | 1.000 | |||||||||
PbERF | 0.189 | -0.027 | 0.212 | 0.056 | 0.796** | 0.442 | 0.463 | 1.000 | ||||||||
PbAAT1 | 0.097 | 0.442 | 0.251 | 0.301 | 0.389 | 0.118 | -0.575* | 0.130 | 1.000 | |||||||
PbADH2 | -0.319 | -0.555* | 0.133 | -0.513* | -0.242 | -0.035 | 0.463 | -0.186 | -0.693** | 1.000 | ||||||
PbADH3 | -0.192 | -0.487 | -0.059 | -0.389 | -0.230 | 0.027 | 0.472 | -0.115 | -0.847** | 0.923** | 1.000 | |||||
PbADH5 | 0.622* | 0.319 | -0.024 | 0.469 | 0.304 | 0.549* | 0.392 | 0.254 | -0.540* | 0.233 | 0.395 | 1.000 | ||||
PbHPL | 0.667** | 0.549* | 0.431 | 0.558* | 0.805** | 0.838** | 0.118 | 0.652** | 0.245 | -0.180 | -0.136 | 0.469 | 1.000 | |||
PbLOX1 | 0.448 | 0.699** | -0.056 | 0.720** | 0.398 | 0.319 | -0.537* | 0.127 | 0.690** | -0.870** | -0.802** | -0.053 | 0.369 | 1.000 | ||
PbLOX6 | -0.419 | -0.118 | 0.227 | -0.257 | 0.000 | -0.416 | -0.330 | 0.012 | 0.720** | -0.501* | -0.681** | -0.823** | -0.165 | 0.336 | 1.000 | |
PbLOX8 | 0.413 | 0.540* | 0.215 | 0.457 | 0.743** | 0.652** | -0.174 | 0.460 | 0.602* | -0.513* | -0.525* | 0.044 | 0.684** | 0.708** | 0.227 | 1.000 |
r0.05=0.514, r0.01= 0.641 |
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