Seed dormancy of nee seeds can be successfully broken by heat treatment at ______?
A. 50°c for 3-7 days
B. 45°c for 3-8 days
C. 54°c for 2-6 days
D. None of the above
Progeny of nucleus seed is called ______?
A. Foundation seed
B. Breeder seed
C. Certified seed
D. Registered seed
Who gave the formula for speed of germination _____?
A. Maguire (1962)
B. Baskin (1972)
C. Moore (1973)
D. Germ (1949)
Who the a method of estimating seed vigour on the basis of color intensity of the stained seeds ?
A. Nicolls & Hey Decker (1968)
B. Kittock &. Law (1953)
C. Moore (1973)
D. Germ (1949)
Seeds of wheat, paddy and maize showed positive correlation germination (%) and viability (%) as determined by ______?
A. Grow put test
B. Tz test
C. Test of genetic purity of seeds
D. Ageing test
Who described the method of estimating seed vigor on the basis of colour intensity of stained seed ______?
A. Woodstock (1976)
B. Kittock and Law (1969)
C. Maguire (1962)
D. Nicolls & Heu Decker (1968)
Oka (1975) has suggested that me population size suitable for maintenance and seed production of a commercial crop of a self pollinated species should be _____?
A. 100 plants
B. 200 plants
C. 300 plants
D. 400 plants
In rice, high silicon content, in shoot confers resistance to ____?
A. Leaf borer
B. Stem borer
C. Root borer
D. All the above
The total dry matter produced by a plant as a resulting photosynthesis is called _____?
A. Biological yield
B. Mass
C. Physical productivity
D. None of the above
Initial vegetation that invades and occupies the area is called ________?
A. Pioneer
B. Range
C. Resin
D. None of the above
