Effects of direct and indirect selection on tuber yield in F1 generation of potato seedlings

Abstract

Effects of direct selection (on tuber yield per plant) and indirect selection (on leaf number per plant, total leaf area of plant and chlorophyll content in leaves) in F1 generation of hybrid seedlings of potato were analyzed in the present study. Investigations were conducted in a contemporary net house of the Potato Research Center at Guča during two years (1999 and 2000). The population of 150 genotypes developed from crosses of two Dutch varieties (Cosmos and Van Gogh) were used as the material for investigations. According to gained results, direct selection of F1 seedlings was the most successful method for obtaining high yielding clones. Selection of superior genotypes with a great leaf area was the best resulting indirect selection method.

U radu su analizirani efekti direktne selekcije (na prinos krtola) i indirektne selekcije (na broj listova po biljci, ukupnu površinu listova biljke i sadržaj hlorofila u listu) u F1 generaciji hibridnih sejanaca krompira. Ispitivanja su obavljena u savremenom mrežarniku Centra za krompir u Guči tokom dve godine (1999 i 2000). Kao materijal za istraživanje korišćena je populacija od 150 genotipova dobijenih ukrštanjem dve holandske sorte: Cosmos i Van Gogh. Direktna selekcija F1 sejanaca pokazala se kao najuspešniji postupak za dobijanje rodnih klonova. Od ispitivanih oblika indirektne selekcije najbolje rezultate daje odabiranje superiornih genotipova na ukupnu površinu listova biljke.