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Fig. 4. SDS PAGE of heat-stable proteins for a) developing and b) mature soybean seeds from plants exposed to three drought stress treatments at beginning seed fill (R5) in the greenhouse experiment. WW: well-watered; GS: gradual stress; SS: sudden severe stress treatments. L: large; M: medium; S: small seeds. Equal weight of protein (7 µg) was loaded per lane. Developing seeds were sampled at 2 (R5.2), 4 (R5.4), 10 (R5.6) and 18 d (R5.8) after the stress treatments were imposed at beginning seed fill (R5). The lane on the left side indicates the molecular weights (MW) of standard proteins (SP). The lane on the right is used to specify MW of proteins indicated by arrows.
