摘要
为深入挖掘诃子种质资源,以怒江流域的240株候选单株为研究对象,测定其果实的19个性状并进行变异和相关性分析,利用主成分分析法、模糊隶属函数法和多维坐标综合法筛选优良单株。结果表明,诃子果实性状变异丰富,变异系数在0.03~0.78之间,均值0.21;变异幅度以没食子酸最大,果肉重量、总酚、果实重量和果核重量次之,果形指数、水浸出物、可食率、水分较小。相关性分析表明,可食率与可溶性固形物、总酸均呈极显著正相关,与水浸出物、总酚和没食子酸均呈显著正相关,可食率可作为诃子优树选择的重要性状指标;总糖、总酸、总酚和可溶性固形物两两之间均呈极显著正相关。19个性状提取到5个主成分,累积方差贡献率74.444%,决选优株9株,编号分别为BB01、BB13、JZS22、MC18、MC20、MCC12、MK08、MK12、SJK08。研究结果为诃子良种选育及创制提供了科学依据,具有重要的应用价值。
诃子(Terminalia chebula Retz.),又名诃黎勒、诃得果,为使君子科(Combretaceae)揽仁树属(Terminalia L.)落叶乔木,分布于南亚和东南亚国家,在中国天然分布集中于怒江流域海拔1100 m以下的河谷地
开展果实性状变异研究和优树选择工作,有助于种质资源的收集、保存、鉴定评价、利用以及栽培良种培育,对推动诃子的开发利用与可持续发展至关重要。经济林优树选择普遍采用主成分分析法、模糊隶属函数法和多维坐标综合法权衡筛选,即将相关性状表型值划分为不同等级并根据其重要性给予分值,累加评分、综合评定决选优
9个采样地点兼顾诃子天然分布区的北部、南部和怒江东岸、西岸流域,每个采样点分布面积不低于10 h
编号 Code | 采样地点 Sampling location | 采样株数 Number of samples | 单株编号 Individual number | 海拔(m) Altitude |
---|---|---|---|---|
1 | 保山市龙陵县镇安镇 | 25 | BB01~25 | 937~1190 |
2 | 保山市隆阳区潞江镇 | 30 | CG01~30 | 741~1263 |
3 | 保山市龙陵县勐糯镇 | 31 | JZS01~31 | 1143~1241 |
4 | 保山市龙陵县木城乡 | 31 | MC01~31 | 1014~1241 |
5 | 保山市龙陵县木城乡 | 31 | MCC01~31 | 902~1263 |
6 | 保山市隆阳区芒宽乡 | 12 | MK01~12 | 762~1023 |
7 | 保山市龙陵县龙新乡 | 29 | SJK01~29 | 883~1457 |
8 | 保山市施甸县太平镇 | 31 | TP01~31 | 968~1319 |
9 | 临沧市镇康县勐棒镇 | 20 | ZK01~20 | 784~1246 |
每个采样地点选择生长正常、成年龄(树龄15 年以上)、盛果期、丰产(树冠垂直投影鲜果产量不低于1 kg/
于2023年11-12月诃子果实成熟期,在各采样点内分样株采集果实样本。每样株从树体不同方向方位采集不低于50个成熟果实,按样株装袋,做好标记,供室内分析(

图1 诃子植株和果实
Fig. 1 Terminalia chebula Retz. and its fruits
果实采集后24 h内完成性状的测定。将样株果实带回实验室内,剔除样品果实中畸形、病虫危害、机械损伤等不正常果实后充分混合均匀,随机选取不低于30个果实,果实清洗干净、沥干果面水分,用游标卡尺测量果实横径、果实纵径、果核横径、果核纵径(精度0.01 mm),用电子天平测量果实重量、果肉重量、果核重量(精度0.1 g);收集、保存果肉用于成分测定。可食率(%)=(果实重量-果核重量)/果实重量×100%;果形指数=果实纵径/果实横径。
分单株将果肉用多功能粉碎机磨碎混匀,装入自封袋、编号后置于2~4℃冷藏保存,用于成分测定。水分、灰分、水浸出物、粗纤维、可溶性固形物、总糖、总酸、总酚、没食子酸含量分别按照GB 5009.3-2016《食品安全国家标准 食品中水分的测定
19个果实性状在全部单株间的变异丰富,变异系数0.03~0.78,均值为0.21。果肉重量、果实重量和果核重量变异系数在0.30~0.34之间;果核纵径/果核横径、果核横径、果核纵径、果实纵径、果实横径、果形指数、可食率变异较低,变异系数均低于0.15。内含物变异系数以没食子酸最高,为0.78,总酚、总糖、灰分和可溶性固形物变异系数在0.23~0.33之间。总酸、粗纤维、水浸出物、水分变异系数均低于0.15。果形指数、水浸出物、可食率和水分变异较小,一致性较高(
果实性状 Fruit traits | 缩写 Abbreviation | 最小值 Min. | 最大值 Max. | 平均值 Average | 标准差 SD | 变异系数 CV |
---|---|---|---|---|---|---|
果实重量(g)Fruit weight | FW | 6.64 | 35.86 | 16.12 | 4.99 | 0.31 |
果实横径(mm)Transverse diameter of fruit | FTD | 20.74 | 38.10 | 27.53 | 3.11 | 0.11 |
果实纵径(mm)Longitudinal diameter of fruit | FLD | 25.80 | 45.77 | 34.63 | 4.16 | 0.12 |
果肉重量(g)Pulp weight | PW | 5.12 | 33.67 | 13.55 | 4.64 | 0.34 |
果核重量(g)Kernel weight | KW | 0.86 | 4.05 | 2.19 | 0.65 | 0.30 |
果核横径(mm)Transverse diameter of kernel | KTD | 7.10 | 18.66 | 12.83 | 1.59 | 0.12 |
果核纵径(mm)Longitudinal diameter of kernel | KLD | 15.01 | 27.75 | 20.24 | 2.49 | 0.12 |
可食率(%)Edible rate | ER | 76.00 | 94.55 | 85.46 | 3.70 | 0.04 |
果形指数 Fruit shape index | FSI | 1.02 | 1.64 | 1.26 | 0.11 | 0.09 |
果核纵径/果核横径 Longitudinal diameter of kernel/transverse diameter of kernel | KLD/ KTD | 1.12 | 2.29 | 1.60 | 0.22 | 0.14 |
水分(%)Moisture content | MC | 69.21 | 84.54 | 78.09 | 2.73 | 0.03 |
灰分(%)Ash content | AC | 0.46 | 1.52 | 0.90 | 0.22 | 0.25 |
水浸出物(%)Water extract | WE | 54.08 | 95.90 | 91.83 | 4.46 | 0.05 |
粗纤维(%)Crude fiber | CF | 1.52 | 3.28 | 2.27 | 0.30 | 0.13 |
可溶性固形物(%)Soluble solids | SS | 4.82 | 28.62 | 14.55 | 3.28 | 0.23 |
总糖(g/100g)Total sugar | TS | 2.08 | 7.76 | 4.33 | 1.19 | 0.27 |
总酸(g/kg)Total acid | TA | 21.11 | 44.96 | 31.14 | 4.24 | 0.14 |
总酚(mg/g)Total phenol | TP | 5.78 | 50.65 | 26.99 | 8.97 | 0.33 |
没食子酸(mg/kg)Gallic acid | GA | 32.34 | 2377.62 | 351.25 | 273.89 | 0.78 |
相关性分析结果表明,诃子各性状之间存在较为复杂的关系,果实重量、果核重量、果肉重量及果实横径、果实纵径两两之间均呈极显著正相关。在果实表型性状与内含物方面,果实横径、果核横径与总糖含量呈显著正相关;可食率与可溶性固形物、总酸均呈极显著正相关,与水浸出物、总酚、没食子酸均呈显著正相关,与灰分呈极显著负相关。粗纤维与果实重量、 果实横径、果肉重量、果核重量、果核横径、果核纵径呈极显著负相关,与果实纵径呈显著负相关,表明粗纤维受果实表型影响较大。在果实内含物方面,总糖、总酸、总酚和可溶性固形物两两之间均呈极显著正相关,均与水分呈极显著负相关;没食子酸与可溶性固形物、 总糖、总酚呈极显著正相关,与水分、水浸出物呈极显著负相关(

图2 果实性状相关性分析
Fig. 2 Correlation analysis of fruit characteristics
*表示在P<0.05水平上显著相关;**表示在P<0.01水平上极显著相关
* indicates that the correlation at P<0.05 is significant; ** indicates that the correlation at P<0.01 is extremely significant
以果实表型性状和内含物的数据为基础,计算主成分的特征值、贡献率及累计贡献率。主成分分析显示有5个主成分特征值大于1.0,符合主成分分析的要求,累计方差贡献率74.444%,能反应19个性状指标的综合信息(
果实性状 Fruit traits | 主成分Principal component | ||||
---|---|---|---|---|---|
PC1 | PC2 | PC3 | PC4 | PC5 | |
果实重量FW(X1) | 0.963 | 0.119 | 0.015 | -0.157 | 0.088 |
果实横径FTD(X2) | 0.911 | 0.143 | -0.101 | -0.310 | 0.072 |
果实纵径FLD(X3) | 0.885 | -0.042 | 0.323 | 0.187 | 0.095 |
果肉重量PW(X4) | 0.938 | 0.153 | 0.084 | -0.226 | 0.096 |
果核重量KW(X5) | 0.705 | -0.181 | -0.485 | 0.411 | -0.005 |
果核横径KTD(X6) | 0.544 | -0.060 | -0.763 | 0.172 | -0.096 |
果核纵径KLD(X7) | 0.719 | -0.324 | 0.111 | 0.524 | -0.005 |
可食率ER(X8) | 0.375 | 0.297 | 0.556 | -0.609 | 0.141 |
果形指数FSI(X9) | 0.051 | -0.236 | 0.575 | 0.635 | 0.041 |
果核纵径/果核横径KLD/ KTD(X10) | 0.168 | -0.247 | 0.815 | 0.296 | 0.084 |
水分MC(X11) | -0.005 | -0.743 | 0.066 | -0.337 | 0.154 |
灰分AC(X12) | -0.184 | 0.272 | -0.166 | 0.412 | 0.263 |
水浸出物WE(X13) | 0.189 | -0.277 | 0.271 | -0.159 | -0.669 |
粗纤维CF(X14) | -0.291 | 0.250 | 0.194 | 0.198 | 0.303 |
可溶性固形物SS(X15) | -0.031 | 0.714 | 0.193 | 0.083 | 0.109 |
总糖TS(X16) | 0.149 | 0.635 | -0.126 | 0.187 | -0.339 |
总酸TA(X17) | 0.072 | 0.451 | 0.213 | 0.026 | -0.570 |
总酚TP(X18) | 0.026 | 0.777 | 0.133 | 0.191 | -0.154 |
没食子酸GA(X19) | 0.056 | 0.515 | -0.094 | -0.059 | 0.474 |
特征值Eigenvalue | 5.087 | 3.157 | 2.524 | 1.974 | 1.402 |
贡献率(%)Contribution rate | 26.774 | 16.618 | 13.284 | 10.388 | 7.380 |
累计贡献率(%)Cumulative contribution rate | 26.774 | 43.392 | 56.676 | 67.064 | 74.444 |
X1、X2、X3、...、X19代表标准化后的性状指标变量
X1,X2,X3,...,X19 represents the standardized trait indicator variable

图3 诃子19个性状主成分分析
Fig. 3 Principal component analysis based on 19 traits of Terminalia chebula
蓝点代表样株
Blue dots represent sample plants
前5个主成分能够反映74.444%的综合信息,用H1、H2、H3、H4、H5分别表示5个主成分,用X1、X2、X3、...、X19代表标准化后的性状指标变量,可得出如下线性方程,分别为:
H1=0.427X1+0.404X2+0.392X3+0.416X4+0.313X5+ 0.241X6+0.319X7+0.166X8+0.023X9+0.075X10-0.002X11- 0.082X12+0.084X13-0.129X14-0.014X15+0.066X16+0.032X17+ 0.012X18+0.025X19
H2=0.067X1+0.081X2-0.024X3+0.086X4-0.102X5- 0.034X6-0.182X7+0.167X8-0.133X9-0.139X10-0.418X11+ 0.153X12-0.156X13+0.141X14+0.402X15+0.357X16+0.254X17+ 0.437X18+0.290X19
H3=0.009X1-0.064X2+0.203X3+0.053X4-0.305X5- 0.480X6+0.070X7+0.350X8+0.362X9+0.513X10+0.042X11- 0.105X12+0.171X13+0.122X14+0.122X15-0.079X16+0.134X17+ 0.084X18-0.059X19
H4=-0.112X1-0.221X2+0.133X3-0.161X4+0.293X5+ 0.122X6+0.373X7-0.434X8+0.452X9+0.211X10-0.240X11+ 0.293X12-0.113X13-0.141X14+0.059X15+0.133X16+0.019X17+ 0.136X18-0.042X19
H5=0.074X1+0.061X2+0.080X3+0.081X4-0.004X5- 0.081X6-0.004X7+0.119X8+0.035X9+0.071X10+0.130X11+ 0.222X12-0.565X13+0.256X14+0.092X15-0.286X16-0.481X17- 0.130X18+0.400X19
将前5个主成分的方差贡献率a1(26.774%)、a2(16.618%)、a3(13.284%)、a4(10.388%)、a5(7.380%)作为权数,构建主成分分析综合评价模型:H=a1H1+a2H2+a3H3+a4H4+a5H5。
利用主成分分析法、隶属函数法、多维坐标综合法分别计算候选优树的综合得分,分值前10%的单株为优良单株,在240株诃子候选优树中,综合3种评价方法,最终筛选得到9株优良单株,编号分别为:BB01、BB13、JZS22、MC18、MC20、MCC12、MK08、MK12、SJK08(
排名 Ranking | 主成分分析法 Principal component analysis | 隶属函数法 Affiliation function method | 多维坐标综合法 Multidimensional coordinate synthesis method | |||
---|---|---|---|---|---|---|
编号 No. | 综合得分 F | 编号 No. | Δi 值 Δi value | 编号 No. | Pi 值 Pi value | |
1 | BB01 | 2.4928 | BB25 | 0.5380 | BB01 | 1.2360 |
2 | MK08 | 2.0289 | BB01 | 0.5317 | MC18 | 1.3045 |
3 | JZS22 | 1.8443 | MK08 | 0.5280 | MK08 | 1.3330 |
4 | MK12 | 1.8248 | MK12 | 0.5230 | JZS22 | 1.3388 |
5 | BB13 | 1.7748 | JZS22 | 0.5115 | MCC12 | 1.3465 |
6 | MCC12 | 1.7726 | BB13 | 0.5113 | MK12 | 1.3582 |
7 | MC18 | 1.7022 | MC20 | 0.5113 | BB13 | 1.3927 |
8 | MC20 | 1.6854 | ZK09 | 0.5050 | MCC11 | 1.4059 |
9 | BB25 | 1.4541 | MCC12 | 0.5000 | CG07 | 1.4274 |
10 | SJK08 | 1.2042 | MCC19 | 0.4982 | MC20 | 1.4577 |
11 | MC07 | 1.1956 | CG28 | 0.4720 | CG05 | 1.4692 |
12 | MC12 | 1.1887 | JZS29 | 0.4712 | ZK14 | 1.4700 |
13 | MCC11 | 1.1529 | BB08 | 0.4673 | MC12 | 1.4735 |
14 | CG28 | 1.1479 | SJK11 | 0.4670 | MC11 | 1.4880 |
15 | CG07 | 1.0992 | MCC09 | 0.4649 | BB04 | 1.4919 |
16 | ZK14 | 1.0125 | MC18 | 0.4640 | MCC07 | 1.4949 |
17 | MCC19 | 1.0119 | MCC22 | 0.4506 | TP06 | 1.5105 |
18 | MCC10 | 0.9771 | MC07 | 0.4473 | TP20 | 1.5147 |
19 | MCC30 | 0.9673 | BB07 | 0.4470 | SJK08 | 1.5178 |
20 | SJK09 | 0.9629 | MCC08 | 0.4426 | CG14 | 1.5280 |
21 | MCC06 | 0.9615 | MCC23 | 0.4414 | MCC02 | 1.5337 |
22 | MCC07 | 0.9468 | MCC21 | 0.4383 | MC31 | 1.5361 |
23 | JZS29 | 0.9409 | SJK08 | 0.4380 | CG03 | 1.5382 |
24 | MC11 | 0.9349 | CG30 | 0.4369 | MCC06 | 1.5418 |
单株编号 Individual number | 果实重量(g) FW | 果实横径 (mm) FTD | 果实纵径(mm) FLD | 果肉重量(g) PW | 果核重量(g) KW | 果核横径(mm) KTD | 果核纵径(mm) KLD | 可食率 (%) ER | 果形指数FSI | 果核纵径/果核横径KLD/KTD |
---|---|---|---|---|---|---|---|---|---|---|
BB01 | 35.86 | 38.10 | 44.88 | 33.67 | 2.19 | 13.51 | 21.32 | 93.86 | 1.18 | 1.58 |
BB13 | 29.64 | 34.60 | 44.26 | 27.22 | 2.42 | 14.19 | 23.41 | 91.74 | 1.28 | 1.65 |
JZS22 | 29.87 | 34.61 | 43.76 | 26.97 | 2.89 | 14.19 | 23.74 | 90.25 | 1.26 | 1.68 |
MC18 | 24.97 | 32.34 | 40.64 | 21.99 | 2.98 | 13.77 | 22.89 | 88.10 | 1.26 | 1.67 |
MC20 | 25.50 | 31.55 | 42.17 | 22.91 | 2.59 | 11.92 | 24.07 | 89.81 | 1.34 | 2.04 |
MCC12 | 26.58 | 33.28 | 39.81 | 23.66 | 2.93 | 13.14 | 25.34 | 88.96 | 1.20 | 1.93 |
MK08 | 30.07 | 33.75 | 45.39 | 26.66 | 3.41 | 15.25 | 23.84 | 88.42 | 1.34 | 1.57 |
MK12 | 20.77 | 27.97 | 45.77 | 17.32 | 3.45 | 13.90 | 25.02 | 83.03 | 1.64 | 1.82 |
SJK08 | 26.69 | 33.22 | 40.39 | 23.55 | 3.14 | 16.03 | 23.51 | 87.29 | 1.22 | 1.47 |
优良单株均值 Mean of superior individuals | 27.77 | 33.27 | 43.01 | 24.88 | 2.89 | 13.99 | 23.68 | 89.05 | 1.30 | 1.71 |
总体均值 Mean of total | 16.12 | 27.53 | 34.63 | 13.55 | 2.19 | 12.83 | 20.24 | 85.46 | 1.26 | 1.60 |
单株编号 Individual number |
水分 (%) MC |
灰分 (%) AC |
水浸出物(%) WE |
粗纤维 (%) CF |
可溶性 固形物 (%) SS |
总糖 (g/100g) TS |
总酸 (g/kg) TA |
总酚 (mg/g) TP |
没食子酸(mg/kg) GA | |
BB01 | 78.52 | 0.60 | 94.21 | 1.69 | 17.40 | 6.45 | 29.05 | 36.20 | 2207.02 | |
BB13 | 78.04 | 1.49 | 94.13 | 2.01 | 18.00 | 4.57 | 29.18 | 32.93 | 273.20 | |
JZS22 | 77.14 | 1.02 | 94.26 | 1.80 | 18.92 | 6.69 | 24.40 | 30.66 | 538.11 | |
MC18 | 74.33 | 0.91 | 93.17 | 2.14 | 22.81 | 6.16 | 38.13 | 42.43 | 382.14 | |
MC20 | 74.45 | 0.79 | 93.20 | 2.38 | 19.14 | 4.76 | 36.03 | 22.35 | 486.40 | |
MCC12 | 73.28 | 1.36 | 93.03 | 2.48 | 13.63 | 5.29 | 33.02 | 41.89 | 278.44 | |
MK08 | 73.35 | 1.14 | 91.60 | 2.84 | 14.29 | 4.72 | 39.62 | 37.72 | 143.87 | |
MK12 | 72.86 | 1.28 | 93.10 | 2.35 | 13.55 | 7.76 | 39.85 | 35.29 | 401.15 | |
SJK08 | 74.87 | 0.81 | 95.90 | 2.16 | 14.34 | 6.23 | 34.24 | 24.67 | 186.27 | |
优良单株均值 Mean of superior individuals | 75.20 | 1.04 | 93.62 | 2.21 | 16.90 | 5.85 | 33.73 | 33.79 | 544.07 | |
总体均值 Mean of total | 78.09 | 0.90 | 91.83 | 2.27 | 14.55 | 4.33 | 31.14 | 26.99 | 351.25 | |
育种资源是生产优良繁殖材料的基础,林木遗传改良需保护物种丰富度,继而持续利用资
植物性状存在一定的关联,相关性分析可以展示各性状之间错综复杂的关
相对于独立标准法和连续选择法,综合评价法综合考虑植物性状,降低优选指标偏差,在选优工作中备受青睐。主成分分析法是将多个性状指标通过降维的方式用综合指标来量化,每个性状系数用简化的综合系数来代
本研究收集不同种源果实,对果实19个性状进行测定和分析,为诃子的良种选育奠定了一定基础。但植物的生长发育和次生代谢物的形成,受基因和环境共同影
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