Group

RNase Bp, ug/ml

Number of explants

Number of virus-free plants

PVM

PVS

number

%^*

number

%^*

Control

0

47

2

4

6

13

RNase Вр

1

20

2

10

6

30

10

18

0

0

4

22

50

12

0

0

2

17

100

16

2

13

1

6

500

4

0

0

2

50