var造句
121. Ultrastructural changes in plasmalemma, chloroplast and mitochondria in response to heat stress in one thermo-resistant cultivar and one thermo-sensitive cultivar of cabbage ( Brassica oleracea var.
122. There occurs pollen abortion during the stage from tetrad to single nucleus pollen grain of cytoplasmic male-sterile line in Brassica napus Var. oleifera(Raphanus sativus L. ).
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