Comparison of the Establishment and Vegetative Growth of Pecan (Carya illinoinensis (Wangenh.) K. Koch) Cultivars in Different Regions of Iran
Fereidoon Ajamgard
1
(
Department of Horticultural Research, Safiabad Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Dezful, Iran
)
Mohammad Reza Taslimpour
2
(
Associate Professor, Department of Seed and Plants Research, Fars Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran
)
Abolmohsen Haji Amiri
3
(
Associate Professor,, Department of Seed and Plants Research, Kermanshah Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Kermanshah, Iran
)
Mohammad Naghi Padash Padash
4
(
Associate Professor, Department of Seed and Plants Research, Gilan Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Lahijan, Iran
)
Mina Ghazaeian
5
(
Associate Professor, Department of Seed and Plants Research, Golestan Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
)
Mohammadreza Vazifeshenas
6
(
Associate Professor, Department of Seed and Plants Research, Yazd Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Yazd, Iran
)
Razieh Mahmoodi
7
(
Associate Professor, Department of Seed and Plants Research, Shahrood Agricultural Research and Education and Natural Resources Center, Agricultural Research, Education and Extension Organization (AREEO), Shahrood, Iran
)
Keywords: Budbreak Carya illinoennensis, Cultivars Vegetative growth ,
Abstract :
Pecan (Carya illinoinensis (Wangenh.) K. Koch) is an economically important nut crop valued for its nutritional content and adaptability to diverse climates. This study evaluated the vegetative growth of seven commercial pecan cultivars (‘GraTex’, ‘Comanche 5M’, ‘Wichita’, ‘10 J’, ‘Choctaw’, ‘Comanche 4M’, and ‘GraKing’) across six regions in Iran. The experiment was conducted using a randomized complete block design with three replications, and measurements included tree height, trunk circumference, and spring budbreak over a five-year period (2019–2023). Results showed that in Sarpol Zahab, ‘GraTex’, ‘10 J’, and ‘GraKing’ exhibited the most vigorous growth, whereas ‘Comanche 5M’ and ‘Choctaw’ performed best in Kazerun. In Gorgan, ‘Comanche 4M’ demonstrated the greatest growth, while ‘Wichita’ showed the weakest performance. Combined analysis across locations indicated that Lahijan supported the highest overall vegetative growth, with ‘Comanche 5M’ and ‘GraTex’ identified as the most vigorous cultivars. Regarding budbreak, ‘Comanche 5M’ and ‘GraKing’ initiated growth earliest, whereas ‘GraTex’ consistently exhibited delayed budbreak, indicating potential resilience to spring frost damage. The observed variation in vegetative growth and budbreak can guide the selection of cultivars best suited for different Iranian agroclimatic zones.
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