85,Fukuoka N,Kano Y. The difference in the development of ho-llowing in roots‘Gensuke’radishbetween the early and late sowing of seeds. J. Jpn. Soc. Hort. Sci.,1992,60,881~887
96 Kano Y,Fukuoka N. Effect of planting density on the occu-rrence of hollow root inJapanese radish cv. ‘Gensuke’. J. Jpn. Soc. Hort. Sci.,1991,60,379~386