The percentage of total genetic variation among populations (FST)
was 9.36% for ISSR and 17.08% for SRAP, which is low for the
mean FST values (25%) found for 52 endemic plants [25]. Like other
Magnolias, M. wufengensis is a long-living species and the accessions
in this study are all adult trees, at least 30 to 50 years old, located in
natural woods and proved by local residents. For rare species, it is of
greater concern when gene flow estimates are high since they may
reflect previous intermingling of populations and should not be
interpreted as indicating the present state of population isolation [27].
In our study, the high estimated Nm values between populations, plus
high levels of genetic diversity within geographical regions, suggest a
likely migrant-pool migratory model [28], which describes a migratory
pattern with colonists recruited from a random sample of previously
existing populations. This model is usually associated with glaciation
Fig. 2. UPGMAdendrogram of 10 populations and subpopulations based on Nei's standard
genetic distance. (a) Tree built using ISSR data. (b) Tree built using SRAP data. Bootstrap
values are indicated as 5% of 1000 replicates. DSP: Dushuping; HY: Hongyan; LKY:
Luokuangyan; LZP: Liziping; NCK: Nanchongkou; SJY: Shuangjianya.
Fig. 3.
The percentage of total genetic variation among populations (FST)
was 9.36% for ISSR and 17.08% for SRAP, which is low for the
mean FST values (25%) found for 52 endemic plants [25]. Like other
Magnolias, M. wufengensis is a long-living species and the accessions
in this study are all adult trees, at least 30 to 50 years old, located in
natural woods and proved by local residents. For rare species, it is of
greater concern when gene flow estimates are high since they may
reflect previous intermingling of populations and should not be
interpreted as indicating the present state of population isolation [27].
In our study, the high estimated Nm values between populations, plus
high levels of genetic diversity within geographical regions, suggest a
likely migrant-pool migratory model [28], which describes a migratory
pattern with colonists recruited from a random sample of previously
existing populations. This model is usually associated with glaciation
Fig. 2. UPGMAdendrogram of 10 populations and subpopulations based on Nei's standard
genetic distance. (a) Tree built using ISSR data. (b) Tree built using SRAP data. Bootstrap
values are indicated as 5% of 1000 replicates. DSP: Dushuping; HY: Hongyan; LKY:
Luokuangyan; LZP: Liziping; NCK: Nanchongkou; SJY: Shuangjianya.
Fig. 3.
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ค่าร้อยละของความแปรปรวนทางพันธุกรรมของประชากรทั้งหมด ( f )
คือ 1.41 % และ srap issr 17.08 % ซึ่งเป็นระดับต่ำสำหรับ
หมายถึงค่า f ( 25% ) พบ 52 พืชเฉพาะถิ่น [ 25 ] ชอบแม็กโนเลีย ๆ
, M wufengensis เป็นเวลานานมีชีวิตชนิดและสายพันธุ์
ศึกษาต้นไม้ผู้ใหญ่ทั้งหมดอย่างน้อย 30 ถึง 50 ปี ตั้งอยู่ในป่าธรรมชาติ
และพิสูจน์ จากชาวบ้าน For rare species, it is of
greater concern when gene flow estimates are high since they may
reflect previous intermingling of populations and should not be
interpreted as indicating the present state of population isolation [27].
In our study, the high estimated Nm values between populations, plus
high levels of genetic diversity within geographical regions, suggest a
likely migrant-pool migratory model [28], which describes a migratory
pattern with colonists recruited from a random sample of previously
existing populations. This model is usually associated with glaciation
Fig. 2. UPGMAdendrogram of 10 populations and subpopulations based on Nei's standard
genetic distance. (a) Tree built using ISSR data. (b) Tree built using SRAP data. Bootstrap
ค่าแสดงเป็น 5 % ของ 1 , 000 ได้แก่ โดย : dushuping ; กรีก : hongyan ; lky :
luokuangyan ; lzp : liziping ; nck : nanchongkou ; sjy : shuangjianya .
รูปที่ 3
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