Seed quality of reciprocal maize single crosses and their parental inbred lines
Autori
Djordjevic Melnik, OliveraBožinović, Sofija
Vukadinović, Radmila
Milivojević, Marija
Petrović, Tanja
Živanović, Tomislav
Vančetović, Jelena
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Five direct and reciprocal early hybrids, five direct and reciprocal late hybrids and a total
of their 12 parental inbred lines were used in order to test reciprocal effects among
hybrids in early germination phase and seed quality of their parental inbred lines. Five
hybrids were of early maturity FAO 300-400 group, and five of late maturity FAO 500-
600 group. In the early group one line of Lancaster origin (L1) was in common, and in
direct crosses used as male parent, while in reciprocal crosses as female parent. The same
case was with late hybrids where another Lancaster line (L2) was in common. In 2015
and 2016 all the material was multiplied in hand pollination and after six months of
storage three tests according to ISTA standards were performed: standard germination test
(SGT), cold-test (CT) and vigor radicle test (RE). According to the Analysis of variance,
a strong reciprocal effect was found among early hybrids for four out of five parameters
in RE and SGT, while... it was found only for RE in late hybrids. However, in CT none of
the parameters had significant reciprocal effect. Two tested Lancaster inbreds were
superior in the hybrids over non-Lancaster lines when used as maternal components,
while as lines per se they did not display such superiority. Mid-parent heterosis (MPH)
ranged from -62.32% to 211.11% in RE test, with an average of 44.26%; from -10.15% to
17.93% in SGT test, with an average of 6.27%, and from -5.31% to 4.49% in CT, with an
average of 0.64%. Significant differences of MPH were found for nine pairs of reciprocal
hybrids for RE, three pairs for SGT and seven pairs for CT. This shows that reciprocal
differences in MPH were higher as the applied level of stress during early seed growth
raised. All the results showed very complicated mode of inheritance of tested traits in the
early developmental stages of young plants, including the phenomenon of heterosis which
is expressed already at the germination stage.
Ključne reči:
heterosis / ISTA / reciprocal effect / seed quality testing / Zea mays L.Izvor:
Genetika, 2023, 55, 2, 611-629Izdavač:
- Beograd : Društvo genetičara Srbije
Finansiranje / projekti:
- Genetički resursi kukuruza kao izvor poboljšanog kvaliteta zrna i tolerantnosti prema suši (RS-MESTD-Technological Development (TD or TR)-31028)
- Ministry of Science, innovation and Technological Development of the Republic of Serbia, grant number 451-03-68/2022- 14/200116