Ponašanje atipičnih klijanaca kukuruza u poljskoj proizvodnji

Bojana Vujošević,Milosav Babić,Bojan Mitrović,Mladen Tatić,Milan Mirosavljević,Petar Čanak,Dušan Stanisavljević

doi:10.5937/ratpov55-15198

Abstract

The aim of this study was to investigate field emergence parameters, number of plants that reached reproductive stage and yield of seed lots with different count of abnormal seedlings. In standard germination test these seedlings are discarded from the count of germinated seed, presuming that they will not develop into normal plants. Five lots of hybrid NS 640 with different percentage of abnormal seedlings were tested. Results showed that in favourable environment conditions, large number of abnormal seedlings emerged, reached reproductive stage and participated in yield formation. However, emergence of seed lots with high percentage of abnormal seedlings was longer than for lots with small number of abnormal seedlings. Laboratory germination and germination energy were more correlated with indicators of field emergence rate, while total percentage of germinated seedlings (normal and abnormal) was more correlated with grain yield. However, it can be expected that in adverse environment conditions, abnormal seedlings are less likely to develop into normal plants.

Highlights

These results suggest that germination energy (GE) and G could be decisive indicators of field emergence rate, represented by parameters Mean emergence time (MET), to 50% emergence (T50) and Emergence index (EI)
Results of this study showed that in favourable environment conditions, large number of abnormal seedlings emerged, reached reproductive stage and participated in yield formation
Laboratory germination and germination energy were more correlated with indicators of field emergence rate, while total percentage of germinated seedlings was more correlated with grain yield

Summary

Introduction

Babić et al (2015) found that in field, under optimal conditions, large number of abnormal seedlings of different maize landraces accessions can reach the stage of four to five leaves and would afterwards develop into normal plants. The aim of this study was to investigate field emergence parameters, number of plants that reached reproductive stage and yield of seed lots with different count of abnormal seedlings. Five seed lots of NS 640 hybrid developed at the Institute of Field and Vegetable Crops, Novi Sad were used in this study conducted in 2017.

Objectives

Results

Conclusion