@article{Salazar_1966, title={Comparative Anatomy of Citrus and Cold-Hardiness}, volume={50}, url={https://revistas.upr.edu/index.php/jaupr/article/view/3470}, DOI={10.46429/jaupr.v50i4.3470}, abstractNote={Seedlings of four varieties of citrus were used, representing four species with a range of cold-tolerance from high to very low. They were examined anatomically and the findings related to the accepted cold-tolerance of the varieties and with their performance in freezing tests. The varieties selected were, in descending order of cold-tolerance: ’Changsha’ mandarin (<em>Citrus reticulata</em>); "Taiwanica’ sour orange (<em>C. taiwanica</em>); ’Parson Brown’ sweet orange (<em>C. sinensis</em>)’, and ’Mexican’ (’West Indian’) lime (<em>C. aurantifolia</em>).}, number={4}, journal={The Journal of Agriculture of the University of Puerto Rico}, author={Salazar, Clery G.}, year={1966}, month={Oct.}, pages={316–336} }