Zbornik - Društvo genetičara Srbije

162 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE IV-Pos-45
Subotica, 30. novembar - 4. decembar 2004.
MEÐUZAVISNOST KOMPONENTI VISINE U GERMPLAZMI SIRKA
METLAŠA [Sorghum bicolor (L). Moench]
V. Sikora
Nauèni institut za ratarstvo i povrtarstvo, Novi Sad
U radu je izvršeno ispitivanje mepuzavisnosti komponenti visine (visina biljke, visina
stabla, duina metlice, duina peteljki, duina drške metlice, duina rukavca lista
zastavièara i eksponiranost metlice) u germplazmi sirka metlaša. Dvogodišnji ogled se
sastojao od kolekcije koja broji 450 genotipova. S obzirom na njeno poreklo i obim moe
se tvrditi da se radi o svetskoj kolekciji sirka metlaša, koja obuhvata lokalne autohtone
populacije, priznate i perspektivne sorte razlièitog porekla, kao i materijal proizišao iz
programa oplemenjivanja.
Od svih komponenti visine pozitivne, visoko signifikantne genetièke korelacije su
zabeleene izmepu visine biljke i visine stabla (rg=0,986**) i duine drške i
eksponiranosti metlice (rg=0,910**). Vrednosti koeficijenata fenotipske korelacije
takope ukazuju na to da visina biljke u najveæoj meri zavisi od visine stabla (rf=0,984**), odnosno eksponiranost metlice od duine drške (rf=0,887**). Znaèajne korelacije su još
zabeleene izmepu duine drške i visine biljke (rg=0,702*; rf=0,646*), duine drške i
visine stabla (rg=0,693*; rf=0,614*) i duine peteljki i duine metlice (rg=0,673*; rf=0,677*). Duina peteljki je osobina koja je u negativnoj korelaciji sa visinom biljke,
visinom stabla, duinom drške i eksponiranošæu. Pored toga, u negativnoj korelaciji su
još i eksponiranost metlice i duina rukavca. Pošto se u praksi metlice sirka metlaša
skidaju ruèno, koncepcija selekcije se uglavnom bazira na stvaranju niskih sorti sa
eksponiranom metlicom.
INTERRELATIONSHIP COMPONENTS OF HEIGHT IN BROOMCORN
[Sorghum bicolor (L.) Moench] GERMPLASM
The examination of interrelationship component of height (plant height, stalk height,
lenght of panicle, fiber lenght, lenght of peduncle, flag leaf sheat lenght and panicle
exseretion) in broomcorn germplasm was carried out. Two years experiment include collection
of 450 broomcorn genotypes. Consider on its origin and volume it represent
world broomcorn collection, which include local populations, grown and perspective varieties
from different origin, as well as selection material.
High significant positive genetic correlation was record between plant height and stalk
height (rg=0,986**) as well as lenght of peduncle and plant exsertion (rg=0,910**). Coefficients
of phenotypic correlation also shows that plant height is mostly depend on stalk
height (rf=0,984**) and panicle exsertion on lenght of peduncle (rf=0,887**). Significant
correlation was record between lenght of peduncle and plant height (rg=0,702*, rf=0,646*), lenght of peduncle and stalk height (rg=0,693*, rf=0,614*) and fiber lenght
and lenght of panicle (rg=0,673*, rf=0,677*). Fiber lenght is characteristic which is in
negative correlation with plant height, stalk height, peduncle lenght and panicle
exsertion. Negative correlation was also record between panicle exsertion and flag leaf
sheat lenght. In praxis broomcorn panicle is harvested manualy, so the concept of selection
is based on low hights varieties with exsertion panicle.