Effects of Shoot Apex Regulation on Agronomic Traits and Lodging Resistance of Flax
In order to determine the effects of shoot apex regulation on flax stalk lodging resistance, we used three treatments, decapitation plus inhibiting sucker, decapitation, inhibiting sucker, and conventional cultivation as the control to study the changes of morphological characteristics and their relationship with lodging resistance. The results showed that "decapitation + inhibiting sucker" treatment can significantly decrease plant height (25.17%),enlarge stem diameter (12. 24%),and significantly reduce the branch number, branch length, branch fresh mass, capsule number and capsule fresh mass by the average of 67. 50%, 52. 80% , 95. 58%%88. 94% and 93. 09% respectively. In inhibiting sucker treatment, there was no significant changes in stem diameter, but the plant height, branch number, branch length, branch fresh mass, fresh mass of capsule and capsule number decreased 6. 41%, 20.0%, 13.08%, 22.73%, 19. 05% and 5. 94%. The branch length of the decapitation treatment significantly increased (34. 11%), but the capsule number and capsule fresh mass decreased by 29. 76% and 50. 93%, and no changes for other morphological characteristics. Correlationanalysis showed that there were highly significant positive correlations between plant height, branch number, branch length, branch fresh mass, capsule number, capsule fresh mass with lodging, but the stem diameter and lodging showed significant negative correlation. Thus, "decapitation + inhibiting sucker" treatment had better effect, which can effectively improve the capacity of lodging resistance at late growth stage of flax.
NETL
NSTL
万方数据
维普
