Lettuce vegetable phase is considered to be the economic importance of the Thai nation. Because it is widely popular among consumers. The consumer is best eaten the stem and leaves are fresh vegetables or other food components. Lettuce planted phase that is the purebred and mixed varieties which all seed is seed imported from abroad. Cause is expensive. The species is grown by small farmers, commercial use or export used seed that comes from Japan. Taiwan and Korea all For lettuce varieties planted phase in the popular Thai has been taken to select varieties, hybrids by lettuce varieties development phase has its own characteristics, not used, which can be very useful in producing hybrid seeds. Study on the seed germination of the pollen male Kan Shu Fluorescent microscope by means of a female gaysorn, is one of the steps used to find its own level, does not stick to vegetable breeding phase.
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