浙江农业学报 ›› 2026, Vol. 38 ›› Issue (2): 301-309.DOI: 10.3969/j.issn.1004-1524.20240999
陈泉1,2(
), 栗辉1,2, 杨靖1,2, 徐嵩琳1,2, 张淑康1,2, 刘忠贤2,3,*(
), 何锦辉3,*(
)
收稿日期:2024-11-21
出版日期:2026-02-25
发布日期:2026-03-24
作者简介:陈泉,主要从事植物病理和果树栽培研究。E-mail:chenquan0616@126.com
通讯作者:
*刘忠贤,E-mail:1058043435@qq.com基金资助:
CHEN Quan1,2(
), LI Hui1,2, YANG Jing1,2, XU Songlin1,2, ZHANG Shukang1,2, LIU Zhongxian2,3,*(
), HE Jinhui3,*(
)
Received:2024-11-21
Online:2026-02-25
Published:2026-03-24
摘要:
为明确重庆黔江桑树产区普遍发生的叶片病害的病原,并评估不同桑树品种对桑断枝烂叶病的抗性水平,以建立精准高效的防控方法,减少桑叶损失,本研究开展了相关实验。通过田间采样,室内分离培养,PCR扩增ITS、ACT、TUB、TEF 4个基因片段并构建系统发育树,确定了病原菌种类;通过室内离体接种47个桑树品种叶片6 d后,根据发病率和病斑平均直径评价不同桑树品种的抗病性。从重庆黔江区桑叶上分离到菌株HBB1,被鉴定为桑断枝烂叶病病原菌(Boeremia exigua)的一个新变种,命名为Boeremia exigua var. mori。接种HBB1菌株后,川桑7657、湖桑32、农桑14号等21个品种的发病率达100%,川桑90-4发病率最低(53.84%)。病斑直径方面,川桑33、川桑39、川桑7657等6个品种的病斑直径大于12 mm,为高感品种;辐射1号病斑直径为2.09 mm,为高抗品种;抗病或中抗品种有32个。综上,本研究首次明确了重庆黔江桑断枝烂叶病的病原为新变种Boeremia exigua var. mori,并系统揭示了桑品种对该病原的抗性差异,可为抗病品种选育与病害精准防控提供科学依据。
中图分类号:
陈泉, 栗辉, 杨靖, 徐嵩琳, 张淑康, 刘忠贤, 何锦辉. 桑断枝烂叶病病原鉴定及47个桑树品种的抗性评价[J]. 浙江农业学报, 2026, 38(2): 301-309.
CHEN Quan, LI Hui, YANG Jing, XU Songlin, ZHANG Shukang, LIU Zhongxian, HE Jinhui. Identification of the pathogen causing mulberry snags rotten leaves disease and resistance of 47 mulberry varieties[J]. Acta Agriculturae Zhejiangensis, 2026, 38(2): 301-309.
| 扩增区域 Amplified region | 正向引物序列(5'→3') Forward primer sequence (5'→3') | 反向引物序列(5'→3') Reverse primer sequence (5'→3') |
|---|---|---|
| ITS | TCCGTAGGTGAACCTTGCGG | TCCTCCGCTTATTGATATGC |
| ACT | ATGTGCAAGGCCGGTTTCGC | TACGAGTCCTTCTGGCCCAT |
| TUB | GGTAACCAAATCGGTGCTGCTTTC | AACCTCAGTGTAGTGACCCTTGGC |
| TEF | CATCGAGAAGTTCGAGAAGG | TACTTGAAGGAACCCTTACC |
表1 引物信息
Table 1 Primer information
| 扩增区域 Amplified region | 正向引物序列(5'→3') Forward primer sequence (5'→3') | 反向引物序列(5'→3') Reverse primer sequence (5'→3') |
|---|---|---|
| ITS | TCCGTAGGTGAACCTTGCGG | TCCTCCGCTTATTGATATGC |
| ACT | ATGTGCAAGGCCGGTTTCGC | TACGAGTCCTTCTGGCCCAT |
| TUB | GGTAACCAAATCGGTGCTGCTTTC | AACCTCAGTGTAGTGACCCTTGGC |
| TEF | CATCGAGAAGTTCGAGAAGG | TACTTGAAGGAACCCTTACC |
| 序号 Code | 品种 Cultivar | 序号 Code | 品种 Cultivar | 序号 Code | 品种 Cultivar |
|---|---|---|---|---|---|
| 1 | 农桑14号Nongsang 14 | 17 | 嘉陵20号Jialing 20 | 33 | 川桑33 Chuansang 33 |
| 2 | 油桑Yousang | 18 | 嘉陵16号Jialing 16 | 34 | 川桑90-4 Chuansang 90-4 |
| 3 | 桂优62 Guiyou 62 | 19 | 桐桑Tongsang | 35 | 川桑826 Chuansang 826 |
| 4 | 桂优12 Guiyou 12 | 20 | 821 821 | 36 | 川桑7657 Chuansang 7657 |
| 5 | 云桑1号Yunsang 1 | 21 | 实钴11-6 Shigu 11-6 | 37 | 川桑3723 Chuansang 3723 |
| 6 | 云桑2号Yunsang 2 | 22 | 西农751 Xinong 751 | 38 | 选一号Xuan 1 |
| 7 | 湖桑32号Husang 32 | 23 | 蓬1号Peng 1 | 39 | 丰田5号Fengtian 5 |
| 8 | 秋茗Qiuming | 24 | 蓬2号Peng 2 | 40 | 蔬菜桑Shucaisang |
| 9 | 农桑8号Nongsang 8 | 25 | 小冠桑Xiaoguansang | 41 | 青皮湖桑Qingpihusang |
| 10 | 双头荷叶白Shuangtouheyebai | 26 | 辅射1号Fushe 1 | 42 | 湖桑7号Husang 7 |
| 11 | 荷叶白Heyebai | 27 | 强桑1号Qiangsang 1 | 43 | 充场Chongchang |
| 12 | 北场1号Beichang 1 | 28 | 茶叶桑Chayesang | 44 | 南1号Nan 1 |
| 13 | 西农1号Xinong 1 | 29 | 川桑48-3 Chuansang 48-3 | 45 | 陕桑305 Shansang 305 |
| 14 | 育711 Yu 711 | 30 | 川桑98-1 Chuansang 98-1 | 46 | 渝桑101 Yusang 101 |
| 15 | 云11 Yun 11 | 31 | 台桑14-1 Taisang 14-1 | 47 | 饲料桑Siliaosang |
| 16 | 新之一濑Xinzhiyilai | 32 | 川桑39 Chuansang 39 |
表2 试验所用桑树品种
Table 2 Mulberry cultivars used in this study
| 序号 Code | 品种 Cultivar | 序号 Code | 品种 Cultivar | 序号 Code | 品种 Cultivar |
|---|---|---|---|---|---|
| 1 | 农桑14号Nongsang 14 | 17 | 嘉陵20号Jialing 20 | 33 | 川桑33 Chuansang 33 |
| 2 | 油桑Yousang | 18 | 嘉陵16号Jialing 16 | 34 | 川桑90-4 Chuansang 90-4 |
| 3 | 桂优62 Guiyou 62 | 19 | 桐桑Tongsang | 35 | 川桑826 Chuansang 826 |
| 4 | 桂优12 Guiyou 12 | 20 | 821 821 | 36 | 川桑7657 Chuansang 7657 |
| 5 | 云桑1号Yunsang 1 | 21 | 实钴11-6 Shigu 11-6 | 37 | 川桑3723 Chuansang 3723 |
| 6 | 云桑2号Yunsang 2 | 22 | 西农751 Xinong 751 | 38 | 选一号Xuan 1 |
| 7 | 湖桑32号Husang 32 | 23 | 蓬1号Peng 1 | 39 | 丰田5号Fengtian 5 |
| 8 | 秋茗Qiuming | 24 | 蓬2号Peng 2 | 40 | 蔬菜桑Shucaisang |
| 9 | 农桑8号Nongsang 8 | 25 | 小冠桑Xiaoguansang | 41 | 青皮湖桑Qingpihusang |
| 10 | 双头荷叶白Shuangtouheyebai | 26 | 辅射1号Fushe 1 | 42 | 湖桑7号Husang 7 |
| 11 | 荷叶白Heyebai | 27 | 强桑1号Qiangsang 1 | 43 | 充场Chongchang |
| 12 | 北场1号Beichang 1 | 28 | 茶叶桑Chayesang | 44 | 南1号Nan 1 |
| 13 | 西农1号Xinong 1 | 29 | 川桑48-3 Chuansang 48-3 | 45 | 陕桑305 Shansang 305 |
| 14 | 育711 Yu 711 | 30 | 川桑98-1 Chuansang 98-1 | 46 | 渝桑101 Yusang 101 |
| 15 | 云11 Yun 11 | 31 | 台桑14-1 Taisang 14-1 | 47 | 饲料桑Siliaosang |
| 16 | 新之一濑Xinzhiyilai | 32 | 川桑39 Chuansang 39 |
图1 桑断枝烂叶病症状 A,幼嫩叶片发病症状;B,成熟叶片发病症状;C,下部老叶穿孔症状。
Fig.1 Symptoms of mulberry snags rotten leaves disease A, Symptoms on young leaves; B, Symptoms on mature leaves; C, Perforation symptoms on lower old leaves.
图2 HBB1菌株菌落特征和孢子形态 A,菌丝正面;B,菌丝背面;C,菌丝(5 d);D,老龄菌丝(15 d);E,分生孢子。
Fig.2 Colony and conidial morphology of strain HBB1 A, Upper surface of mycelial mat; B, Lower surface of mycelial mat; C, Young mycelia (5 d); D, Senescent mycelia (15 d); E, Conidia.
图3 基于多基因序列的桑断枝烂叶病菌系统进化树
Fig.3 Phylogenetic tree of the mulberry snags rotten leaves disease pathogen (Boeremia exigua var. mori) based on multi-gene sequences
图5 部分桑树品种叶片接种桑断枝烂叶病菌后的症状 A,PDA;B,辐射1号;C,农桑14号;D,贵优12;E,云11;F,茶叶桑;G,油桑;H,北场1号;I,荷叶白;J,充场;K,川桑48-3;L,川桑33。
Fig.5 Symptoms on leaves of some mulberry varieties after inoculation with the mulberry snags rotten leaves disease pathogen A, PDA; B, Fushe 1; C, Nongsang 14; D, Guiyou 12; E, Yun 11; F, Chayesang; G, Yousang; H, Beichang 1; I, Heyebai; J, Chongchang; K, Chuansang 48-3; L, Chuansang 33.
| 品种 Variety | 发病率/% Incidence/% | 病斑直径/mm Diameter of infection sites/mm | 抗性 Resistance | 品种 Variety | 发病率/% Incidence/% | 病斑直径/mm Diameter of infection sites/mm | 抗性 Resis- tance |
|---|---|---|---|---|---|---|---|
| 川桑33 Chuansang 33 | 88.89±8.39 | 12.80±0.26 | HS | 饲料桑Siliaosang | 82.50±10.9 | 8.28±0.24 | MR |
| 川桑39 Chuansang 39 | 61.37±10.28 | 13.44±0.41 | HS | 双头荷叶白Shuangtouheyebai | 100.00±0 | 7.52±0.50 | MR |
| 川桑7657 Chuansang 7657 | 100.00±0 | 12.40±0.36 | HS | 云桑2号Yunsang 2 | 100.00±0 | 8.50±0.50 | MR |
| 川桑48-3 Chuansang 48-3 | 89.26±8.91 | 18.42±0.38 | HS | 南1号Nan 1 | 90.67±9.29 | 6.58±0.28 | MR |
| 川桑3723 Chuansang 3723 | 88.79±8.25 | 17.83±0.24 | HS | 丰田5号Fengtian 5 | 100.00±0 | 6.24±0.25 | MR |
| 台桑14-1 Taisang 14-1 | 80.61±10.05 | 13.99±0.19 | HS | 新之一濑Xinzhiyilai | 100.00±0 | 6.83±0.28 | MR |
| 川桑826 Chuansang 826 | 81.83±7.90 | 10.11±0.37 | S | 湖桑32 Husang 32 | 100.00±0 | 8.23±0.25 | MR |
| 川桑90-4 Chuansang 90-4 | 53.84±12.71 | 10.02±0.48 | S | 茶叶桑Chayesang | 98.67±2.31 | 5.74±0.25 | R |
| 选一号Xuan 1 | 88.64±8.05 | 11.42±0.38 | S | 821 821 | 88.61±8.01 | 5.33±0.28 | R |
| 充场Chongchang | 100.00±0 | 9.54±0.34 | S | 实钴11-6 Shigu 11-6 | 100.00±0 | 5.25±0.25 | R |
| 云桑1号Yunsang 1 | 100.00±0 | 9.98±0.53 | S | 西农751 Xinong 751 | 100.00±0 | 5.30±0.30 | R |
| 荷叶白Heyebai | 88.61±8.01 | 10.74±0.25 | S | 贵优62 Guiyou 62 | 71.94±12.54 | 5.38±0.34 | R |
| 北场1号Beichang 1 | 100.00±0 | 9.56±0.22 | S | 嘉陵16 Jialing 16 | 100.00±0 | 4.76±0.25 | R |
| 强桑1号Qiangsang 1 | 84.89±6.83 | 9.57±0.21 | S | 云11 Yun 11 | 100.00±0 | 5.39±0.36 | R |
| 西农1号Xinong 1 | 100.00±0 | 7.11±0.36 | MR | 嘉陵20 Jialing 20 | 71.39±10.08 | 5.04±0.26 | R |
| 蔬菜桑Shucaisang | 85.56±5.85 | 7.27±0.25 | MR | 蓬1号Peng 1 | 85.89±5.83 | 5.63±0.35 | R |
| 农桑14号Nongsang 14 | 100.00±0 | 6.59±0.37 | MR | 油桑Yousang | 78.99±8.52 | 5.28±0.25 | R |
| 陕桑305 Shansang 305 | 87.94±7.92 | 7.29±0.26 | MR | 青皮湖桑Qingpihusang | 78.06±7.56 | 3.58±0.19 | R |
| 秋茗Qiuming | 100.00±0 | 8.81±0.27 | MR | 湖桑7号Husang 7 | 79.17±8.78 | 4.76±0.25 | R |
| 渝桑101 Yusang 101 | 100.00±0 | 7.28±0.25 | MR | 桐桑Tongsang | 100.00±0 | 5.80±0.26 | R |
| 农桑8号Nongsang 8 | 100.00±0 | 6.24±0.25 | MR | 贵优12 Guiyou 12 | 69.72±9.59 | 4.53±0.50 | R |
| 蓬2号Peng 2 | 100.00±0 | 6.79±0.21 | MR | 小冠桑Xiaoguansang | 100.00±0 | 3.92±0.19 | R |
| 育711 Yu 711 | 83.89±8.39 | 6.55±0.43 | MR | 辐射1号Fushe 1 | 88.55±7.93 | 2.09±0.52 | HR |
| 川桑98-1 Chuansang 98-1 | 62.22±10.72 | 6.61±0.26 | MR |
表3 桑断枝烂叶病病原菌接种6 d后47个桑叶品种的发病情况及其抗性
Table 3 Disease development and resistance of 47 mulberry varieties at 6 days after inoculation with mulberry snags rotten leaves disease pathogen
| 品种 Variety | 发病率/% Incidence/% | 病斑直径/mm Diameter of infection sites/mm | 抗性 Resistance | 品种 Variety | 发病率/% Incidence/% | 病斑直径/mm Diameter of infection sites/mm | 抗性 Resis- tance |
|---|---|---|---|---|---|---|---|
| 川桑33 Chuansang 33 | 88.89±8.39 | 12.80±0.26 | HS | 饲料桑Siliaosang | 82.50±10.9 | 8.28±0.24 | MR |
| 川桑39 Chuansang 39 | 61.37±10.28 | 13.44±0.41 | HS | 双头荷叶白Shuangtouheyebai | 100.00±0 | 7.52±0.50 | MR |
| 川桑7657 Chuansang 7657 | 100.00±0 | 12.40±0.36 | HS | 云桑2号Yunsang 2 | 100.00±0 | 8.50±0.50 | MR |
| 川桑48-3 Chuansang 48-3 | 89.26±8.91 | 18.42±0.38 | HS | 南1号Nan 1 | 90.67±9.29 | 6.58±0.28 | MR |
| 川桑3723 Chuansang 3723 | 88.79±8.25 | 17.83±0.24 | HS | 丰田5号Fengtian 5 | 100.00±0 | 6.24±0.25 | MR |
| 台桑14-1 Taisang 14-1 | 80.61±10.05 | 13.99±0.19 | HS | 新之一濑Xinzhiyilai | 100.00±0 | 6.83±0.28 | MR |
| 川桑826 Chuansang 826 | 81.83±7.90 | 10.11±0.37 | S | 湖桑32 Husang 32 | 100.00±0 | 8.23±0.25 | MR |
| 川桑90-4 Chuansang 90-4 | 53.84±12.71 | 10.02±0.48 | S | 茶叶桑Chayesang | 98.67±2.31 | 5.74±0.25 | R |
| 选一号Xuan 1 | 88.64±8.05 | 11.42±0.38 | S | 821 821 | 88.61±8.01 | 5.33±0.28 | R |
| 充场Chongchang | 100.00±0 | 9.54±0.34 | S | 实钴11-6 Shigu 11-6 | 100.00±0 | 5.25±0.25 | R |
| 云桑1号Yunsang 1 | 100.00±0 | 9.98±0.53 | S | 西农751 Xinong 751 | 100.00±0 | 5.30±0.30 | R |
| 荷叶白Heyebai | 88.61±8.01 | 10.74±0.25 | S | 贵优62 Guiyou 62 | 71.94±12.54 | 5.38±0.34 | R |
| 北场1号Beichang 1 | 100.00±0 | 9.56±0.22 | S | 嘉陵16 Jialing 16 | 100.00±0 | 4.76±0.25 | R |
| 强桑1号Qiangsang 1 | 84.89±6.83 | 9.57±0.21 | S | 云11 Yun 11 | 100.00±0 | 5.39±0.36 | R |
| 西农1号Xinong 1 | 100.00±0 | 7.11±0.36 | MR | 嘉陵20 Jialing 20 | 71.39±10.08 | 5.04±0.26 | R |
| 蔬菜桑Shucaisang | 85.56±5.85 | 7.27±0.25 | MR | 蓬1号Peng 1 | 85.89±5.83 | 5.63±0.35 | R |
| 农桑14号Nongsang 14 | 100.00±0 | 6.59±0.37 | MR | 油桑Yousang | 78.99±8.52 | 5.28±0.25 | R |
| 陕桑305 Shansang 305 | 87.94±7.92 | 7.29±0.26 | MR | 青皮湖桑Qingpihusang | 78.06±7.56 | 3.58±0.19 | R |
| 秋茗Qiuming | 100.00±0 | 8.81±0.27 | MR | 湖桑7号Husang 7 | 79.17±8.78 | 4.76±0.25 | R |
| 渝桑101 Yusang 101 | 100.00±0 | 7.28±0.25 | MR | 桐桑Tongsang | 100.00±0 | 5.80±0.26 | R |
| 农桑8号Nongsang 8 | 100.00±0 | 6.24±0.25 | MR | 贵优12 Guiyou 12 | 69.72±9.59 | 4.53±0.50 | R |
| 蓬2号Peng 2 | 100.00±0 | 6.79±0.21 | MR | 小冠桑Xiaoguansang | 100.00±0 | 3.92±0.19 | R |
| 育711 Yu 711 | 83.89±8.39 | 6.55±0.43 | MR | 辐射1号Fushe 1 | 88.55±7.93 | 2.09±0.52 | HR |
| 川桑98-1 Chuansang 98-1 | 62.22±10.72 | 6.61±0.26 | MR |
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