The effect of cytoplasmatic male sterility on yield and yield components of maize inbred lines
Аутори
Stevanovic, MilanMladenović-Drinić, Snežana
Pavlov, Jovan
Grčić, Nikola
Ristić, Danijela
Nikolić, Milica
Savić, Iva
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Initial studies related to cytoplasmic male sterility (CMS) were performed by Rhoeds in 1931.
CMS is used in maize to enhance efficiency of seed production with simultaneous cost
redaction. The majority of studies showed positive effects of CMS on maize grain yield.
Grain yields recorded male sterile plants were higher by 5-10% than the ones in female fertile
plants. Seven maize inbred lines of different origin and growing season were analysed. Each
inbred was analysed in five variants: original inbred (N), CMS-C, RfC, CMS-S and RfS. The
aim of this study was to compare grain yields and yield components of original inbreds and
their CMS and Rf variants. The highest yields of observed inbreds (5.303 and 5.197 t/ha)
were recorded in those with C and S cytoplasm, respectively. According to the LSD test, at
significance levels of 0.05 and 0.01, the longest ears of 15.57, 15.56 and 15.46 cm were
detected in inbreds with original, S and C cytoplasm, respectively. The high...est kernel row
number (12.98) at both significance levels was established in inbreds with C cytoplasm. The
highest number of kernels per row (33.92) at both levels of significance was recorded in
inbreds with S cytoplasm. The greatest kernel depth (0.8212 and 0.8196 cm) at both
significance levels was established in inbreds with C and S cytoplasm, respectively. The
greatest 1000-kernel weight at both levels of significance was detected in inbreds with normal
cytoplasm. The highest number of kernels per m2
(2716 and 2676) was recorded in inbreds
with C and S cytoplasm, respectively.
Кључне речи:
maize / yield / male sterility / inbred linesИзвор:
10. international scientific agricultural symposium "Agrosym 2019" - Book of proceedings, 2019, 724-728Издавач:
- Banja Luka : University of Banja Luka, Faculty of Agriculture