نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت و اصلاح نباتات، پردیس ابوریحان دانشگاه تهران، تهران، ایران
2 گروه علوم باغبانی، پردیس ابوریحان دانشگاه تهران، تهران، ایران
3 گروه علوم زراعی و اصلاح نباتات - پردیس ابوریحان- دانشگاه تهران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
This study aimed to evaluate the yield and its components as well as fruit quality traits of 650 tomato inbred lines resulting from self-fertilization of commercial cultivars. The lines were evaluated along with four commercial hybrid control cultivars in 2022 as augmented in a randomized complete block design. The coefficients of phenotypic variation and the maximum and minimum values of the studied traits showed that there was a high variation for the traits of Sunscald (%), joint calyx (%), shelf life, TA, the number of fruits per plant, single-plant yield and the number of locules among the lines, so it is possible to select the best lines with high efficiency among them for breeding purposes. Among the lines, “242”, “495”, “17” and “85” were superior to other lines and control cultivars with a yield of over 6 kg per plant. Sunscald (%), joint calyx (%) and the number of locules were least influenced by the environment and had the highest genetic variance. Also, principal component analysis based on morphological traits showed that the first six main components explained 69.32% of the total phenotypic variation. Stepwise regression analysis showed that number of fruit per plant and single fruit weight explained 96% of the single-plant yield variation. Overall, among the morphological characteristics, the traits of the number of fruits per plant, single fruit weight, number of inflorescences per plant, and number of fruits per inflorescence are more important indicators for selecting high-yielding tomato lines.
کلیدواژه‌ها [English]
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