B prefer
8.so was the IIPC of nymph of biotype Cuulong delta fed on B?W and TN1? After infested one day and two days,there were no significant differences among the selectivities of the third-fourth instar nymphs of biotype Ⅱand biotype Cuulong delta on TN1, Mudgo ,ASD7, B?W, Ptb33,those of biotype Bangladesh preferred strongly to TN1?After infested three days,those of biotype Ⅱand biotype Bangladesh did not prefer to Ptb33;

