CHARACTERISTICS OF FRUIT FROM DIFFERENT PROGENIES OF JUJUBE (ZIZYPHUS JUJUBA MILL.)

Aleksandar Markovski

doi:10.20903/csnmbs.masa.2016.37.1.79

Abstract

The pomological characteristics of five varieties and one wild form of jujube progenies were examined in the experimental orchard of the Institute of Agriculture in Skopje during 2002–2004. The seeds from the varieties: Zu tao czao, Da baj czao, Kitajski 2A, Ja czao, Vahshski 45–2, and Wild midleasiatic jujube type were obtained by open pollination. Some characteristics of the fruits such as: mass of the fruits (g), fruit density (g/cm3), mass of the seed (g), and randman (%) were investigated in 7–9 years old jujube seedlings grown from that seed material and planted in the frames of a breeder field. A dominant mother effect in the inheritance was registered in the mass and density of the fruits. For instance: the variety Kitajski 2A and the types from its progeny were characterized by the greatest mass of the fruits, while, the greatest density was found in the fruits of the variety Da bai czao and the types from its prog-eny. The greatest mass of the seed was recorded in the variety Kitajski 2A, while the biggest average mass of the seeds was characteristic for the progeny of the Ja czao variety.

Highlights

The jujube is a relatively new fruit kind which slowly but surely spreads in the fruit orchards
The fruit weight per fruit had low heritability along with low genetic advance, indicating that dominance of epistatic effect was considerable on these characters, and a little improvement was possible through selection [1]
Fruit size and stone size were the main parameters for a yield which contributed via fruit weight [5]

Summary

Introduction

The jujube is a relatively new fruit kind which slowly but surely spreads in the fruit orchards. The characteristics, such as the late start of vegetation (late April), late blooming (the beginning of June) and long period of blooming (1–2 months), as well as the resistance to drought, make this fruit crop very interesting for growing in the present conditions of frequent climate changes. Because of the genetic predispositions to resist to the external factors, the breeding programmes for this fruit kind are targeted in the direction of increasing of the size and quality of the fruits. The main goal of this work is to obtain types with improved fruit characteristics through a mass selection among the jujube varieties progenies

Objectives

Results

Conclusion