Inheritance of the chlorophyll content in leaves of f1 experimental tomato hybrids

Abstract

The chlorophyll content in tomato leaves directly indicates the level of photosynthetic ability and also shows genetic potential of a certain genotype. The present study encompasses the experimental crosses among homozygous inbreeds. Two male and five female components were used in the experiment. Ten newly developed hybrids in F1 generation and seven parental inbreeds were analyzed for the chlorophyll content in leaves. The obtained average values ranged from 47.90 to 63.44 universal SPAD units. Some of experimental tomato hybrids had significantly higher value of the chlorophyll content in leaves than their parents, indicating that heterosis was expressed in these combinations.

Sadržaj hlorofila u listu paradajza direktno ukazuje na nivo fotosintetske aktivnosti, a samim tim i na potencijal određenog genotipa. U ovom radu su vršena eksperimentalna ukrštanja homozigotnih linija, pri čemu su dva genotipa bila očinske, a drugih pet majčinske komponente. Dobijenih deset hibrida u F1 generaciji i sedam roditeljskih linija analizirani su na sadržaj hlorofila u listu. Izmerene su prosečne vrednosti hlorofila u rasponu od 47,90 do 63,44 univerzalnih SPAD jedinica. Neki od eksperimentalnih hibrida paradajza imali su signifikantno višu vrednost sadržaja hlorofila u listu od oba svoja roditelja, što ukazuje na ispoljavanje heterozisa u tim kombinacijama.