The necessary conditions for a successful graft include all the following except

The necessary conditions for a successful graft include all the following except

• A. The graft union must remain dry until the wound has healed
• B. The scion and the rootstock must each be at a proper physiological stage
• C. The cambial layers of the scion and rootstock must meet
• D. The scion and rootstock must be compatible

Answer: (A)

The condition that truly matters for a successful graft is establishing a continuous vascular connection between the scion and rootstock, which requires the cambial layers to meet and align so that the new xylem and phloem can form across the joint. Both pieces must be at a compatible physiological stage, meaning their tissues are actively capable of growth and healing, so that callus formation and tissue fusion can occur. Compatibility—genetic or physiological—helps ensure the graft will take and function well. The wound area, on the other hand, should be kept moist to prevent desiccation and support healing; dryness would dry out the tissues and hinder graft union. That’s why keeping the graft dry is not a necessary condition.

The condition that truly matters for a successful graft is establishing a continuous vascular connection between the scion and rootstock, which requires the cambial layers to meet and align so that the new xylem and phloem can form across the joint. Both pieces must be at a compatible physiological stage, meaning their tissues are actively capable of growth and healing, so that callus formation and tissue fusion can occur. Compatibility—genetic or physiological—helps ensure the graft will take and function well. The wound area, on the other hand, should be kept moist to prevent desiccation and support healing; dryness would dry out the tissues and hinder graft union. That’s why keeping the graft dry is not a necessary condition.