Heat Stress during Heat-Tolerance Screenings During the three heat-tolerance screenings, the daily average temperatures in the growth periods of pea at different sowing stages showed an increasing trend ( Figure 1 ), and the daily average temperatures of the first stage of late sowing (LS1) and the second stage of late sowing (LS2) were significantly higher than those of normal sowing (NS).
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Large-Scale Heat-Tolerance Screening and Genetic Diversity of Pea (<i>Pisum sativum</i> L.) Germplasms.
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The number of accessions at each level showed a trend of polarization, that is, the proportions of HT (57) and HS (51) pea accessions were relatively increased, while the proportions of pea accessions at other levels were relatively decreased ( Figure 5 B).