Evaluation of Morphological Characteristics, Growth Vigor and Yield of Some Almond Cultivars under Environmental Conditions of Neyriz of Fars Province in Iran

Article Type:
Research/Original Article (دارای رتبه معتبر)

Considering the adverse effect of changing climate, it is necssary to introduce new commercial high-yielding and marketable almond cultivars with different chilling and heat requirements, flowering time, which can adapt to various regions. Therefore, almond trees of three recently registered cultivars named; Aria, Bardia and Zeighami and two control cultivars grafted on bitter almond seedlings were compared using randomized complete block design with five replications from 2018-21 in an almond orchard in Neyriz of Fars province in Iran. Chilling and heat requirements, tree growth vigor, yield related traits, and relationships between different pomological and morphological characteristics were measured and evaluated. The results showed that cv. Aria was superior to the other cultivars due to its higher trunk cross-sectional area (TCSA) (325 cm2) and production and yield efficiency (100.26 g nut and 25.36 g kernel per cm2 TCSA). The proportion of double kernels and kernels in the Zeighami and Bardia cultivars, respectively, was below the standard classification for almonds. Cv. Aria and cv. Bardia had the lowest chilling requirements (296 CU) and cv. Ferraduel the highest (515 CU). The heat requirement of the newly registered almond cultivars was also lower than control cultivars. Aria and Bardia cultivars flowered two weeks earlier than control cultivars. In conclusion, cv. Aria is a suitable commercial almond cultivar for being grown in regions with no of spring frost risk.

Seed and Plant Journal, Volume:39 Issue: 2, 2024
225 to 251
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