71. Freezing tolerant rootstock of citrus is
72. Bitter gourd witches broom is caused by
73. Many fold effects of a gene refers to
74. CBD (Convention on Biological Diversity) signed during the Earth Summit at Rio de Janerio, Brazil in . . . . . . . .
75. Seed plot technique in potato was developed by . . . . . . . .
76. The inception of ripening in grape is termed as
77. Haploid plants have been produced by anther culture in tomato by
78. Fruit thinning growth regulator is
79. In India, hydroponics was 1st introduced at
80. Rock arrangement is a central feature of
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