For the stable production of high quality tea, the freezing resistance is a very important character. Most of the farmers have planted out-pollinated seeds that are not genetically pure. So, with small sample, a quick and simple method is required to test freezing resistance of lots of germ-plasm and early generation of hybrids. The absorbances(A530 nm) of TTC reduction solution at -5~circC were positively correlated with resistance to photoinhibition of PSII in 6 hour photoinhibitory treatments, being significantly fitted by simple linear regression (R2 =0.64** ). Chlorophyll fluorescence measured by Fv/Fm was found to be very useful in evaluating the relative levels of freezing resistance in tea.

춘파2조, 춘파6조 급 춘파6조대맥의 각:5품종 계 15품종의 종자단백질을 disc electrophoresis에 의하여 분리하고, 그 결과를 사진, densitometric tracing 급 모식도로 제시했다. 품종에 따라 18∼21 bands를 식별할 수 있었다. 품종은 각각 고유의 pattern을 보이고 있어, electrophoretic patter이 각품종의 유전적 차이를 반영하는 것이라고 생각된다. 추파대맥은 전부 희박한 B2 band를 갖이고 있고 춘파대맥은 농후한 B2 band를 갖이고 있었으며, 또 B2 band는 대파대맥에서, B3 band는 춘파대맥에서만 볼 수 있어, 춘파대맥과 추파대맥을 electrophoretic pattern에 의하여 구별할 수 있었다.