The original transgenic (T0) plants obtained from transformation experiments were hemizygous for the introduced transgenes . In the subsequent generations (T1 onward), a mixture of zygosity level (such as homozygous for the presence of transgene,
hemizygous for the transgene and homozygous for the absence of transgene) are expected . At ad-vanced generations such as T2, T3 and T4, it is possible to identify and recover homozygous lines where all subsequent progenies
could show resistance to the herbicide application.