Table 1 Resin yield and total guayulin evolution over the six-month study period for stems of three guayule accessions (AZ-2, CAL-1, and R1040)

0

12.27 d

51.38 bc

9.25 c

56.30 c

10.14 a

98.72 b

14

11.14 cd

52.79 c

7.34 a

53.91 c

10.19 a

98.20 b

42

12.09 d

35.44a

9.65 c

39.34 b

10.17 a

72.87 a

73

10.22 abc

40.47 ab

7.79 a

41.50 b

10.61 a

79.38 a

117

9.80 ab

33.89 a

9.10 bc

27.39 a

10.51 a

66.18 a

150

10.60 bc

30.22 a

9.63 c

27.29 a

–

–

185

9.43 a

30.25 a

8.23 ab

25.50 a

–

–