The freezing of water in acclimated and nonacclimated cereals was studied using pulsed nuclear magnetic resonance spectroscopy. The quantity of unfreezable water per unit dry matter was not strongly dependent on the degree of cold acclimation. In contrast, the fraction of water frozen which was tolerated by nonacclimated winter cereals and by an acclimated spring wheat (Triticum aestivum L.) was less than in acclimated hardy cereals. The freezing curves had the following form:LT = L0ΔTm/T + KLT and L0 are liquid water per unit dry matter at T and 0 C, respectively. ΔTm is the melting point depression and K is the liquid water which does not freeze.
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机译：使用脉冲核磁共振波谱研究了适应性和非适应性谷物中水的冷冻。每单位干物质不可冻结的水量在很大程度上不取决于冷驯化程度。相反，未驯化的冬季谷物和驯化的春小麦（Triticum aestivum L.）可以忍受的冷冻水比例低于驯化的耐寒谷物。冻结曲线具有以下形式：LT =L0ΔTm/ T + KLT和L0分别是在T和0 C下每单位干物质的液态水。 ΔTm是熔点降低量，K是不冻结的液态水。
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