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.Management Sciences
Category: Plant Breeding and Genetics
Haploid plants have been produced by another culture in tomato by_________________?
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A. Greshof and Doy (1972)
B. Tyagi and Prasad (1965)
C. Mehta and Upadhya (1960)
D. Singh (1960)
Stadler, first used X-rays for induction of mutation in_________________?
A. Oat
B. Maize
C. Wheat
D. Barley
Polyploidy is most likely to result from ____________________?
A. Occurrence of crossing over
B. The crossing over between non homologous chromosomes
C. Occurrence of karyokinesis
D. The failure of homologous chromosomes to separate during meiosis
A place or area where maximum variability of crop plants is observed__________________?
A. Genetic diversity
B. Micro centers
C. Gene sanctuaries
D. Centers of diversity
Concept of generation means analysis was developed by_______________________?
A. Hayman (1958)
B. Griffing (1965)
C. Jink (1950)
D. Kempthome (1957)
Analysis of covanance permits estimation of_____________________?
A. Environmental covanance
B. Phenotypic covanance
C. Genotypic convanance
D. All the above
Heterosis can be fixed by___________________?
A. Apomixis
B. Polyploidy
C. Asexual reproduction
D. All the above
The most effective method for the transfer of oligogenic characters________________?
A. Bulk
B. Backcross
C. Disruptive
D. Pedigree
In maize source of high lysine is___________________?
A. Opaque 2
B. Proline
C. Gang as
D. African tall
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