Naslov
Phenotypic and genotypic analysis of spike abnormality in bread wheat (Triticum aestivum L. em Thell) cv. Pitoma

Autori
Srečec, Siniša ; Jelenić, Srećko ; Papeš, Dražena

Izvornik
Cereal Research Communications (0133-3720) 23 (1995), 1/2; 63-69

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Triticum aestivum; bread wheat; spike sterility; phenotypic abnormalities; mitotic index; chromosomal aberrations; herbicides; chlortoluron

Sažetak
In offspring of 4500 selected spikes (breeder's seed) in bread wheat cv. Pitoma, 17 sterile and deformed spikes were found. They were divided into three groups, basically by their phenotypic characteristics. For the purpose of detection causes of such phenomena, the cytogenetic analysis of seedlings obtained from seeds of atypical spikes has carried out. The cytogenetic analysis showed a decrease of mitotic index (MI) in Group I and Group II of atypical skies (17.5 and 61.9 % respectively) and increase of MI (14, 5 %) in the third group of atypical spikes. The frequency of chromosmal aberrations ranged from 0.5 % (in Group III) to 7.3 % (in Group II). The chromosomal bridges were the most represented types of chromosomal aberrations in all three groups. Possible connections between the observed spikes abnormalities and influence of herbicide Dicuran (79.25 % of chlortoluron) could be predicted in consideration of the type and frequency of chromosomal aberrations.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija), Biotehnologija

POVEZANOST RADA