Cultural, environmental, and genetic factors interact to affect performance of planted shortleaf pine
1993
Hallgren, S.W. | Tauer, C.G. | Weeks, D.L.
The effects of lift date and storage on plantation performance were evaluated for 12 families of shortleaf pine (Pinus echinata Mill.) from Oklahoma and Arkansas in 2 consecutive years. Plantation performance was affected by lift date, storage treatment, and planting site weather. A high capacity for survival and growth was observed for lift dates from November through March for unstored seedlings and December through February for seedlings stored 28 days. Outside this lifting window stored seedlings showed lower survival and growth. Winter cold and spring drought caused significant losses for seedlings that had not had sufficient time to become established after transplanting. Seedlings planted after no storage in November and early December showed the highest capacity for rapid growth probably because they had the longest time to grow roots and become established before the next growing season. Root growth potential and the number of first-order lateral roots were good indicators of family field performance while root volume, height, diameter and presence of a terminal bud and secondary needles were not. The number of first-order lateral roots was highly heritable.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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