. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. WILT OF CUCURBITS. 259 lation) the pricked leaf was holding up remarkably well. The petiole was yellowish but turgid, and not more than one-third of the blade was dead although it had lost nearly all of its green color and was yellow. The next leaf above and the next below were beginning to be yellow but showed no wilt. November 29 the vine was still alive but stunted and yellowish and losing leaves toward the base. It was blossoming freely. December 3 this vine resembled 215 except that the three basal leaves had shrivele
. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. WILT OF CUCURBITS. 259 lation) the pricked leaf was holding up remarkably well. The petiole was yellowish but turgid, and not more than one-third of the blade was dead although it had lost nearly all of its green color and was yellow. The next leaf above and the next below were beginning to be yellow but showed no wilt. November 29 the vine was still alive but stunted and yellowish and losing leaves toward the base. It was blossoming freely. December 3 this vine resembled 215 except that the three basal leaves had shriveled and the others were not so yellow. The dwarfing of the foliage was distinct. March 4 (5 months after inoculation) the vine was still living but was stunted and branched and bore more yellow leaves than green ones. It and all the other squash vines had resisted remarkably. (217.) Winter Squash var. Pikes Peak. There were no signs of the wilt until the twelfth day after inoculation. Then the tip of the pricked leaf was drooping (without change of color) and an area of about sq. cm. had changed color and wilted, where pricked. Four days later there were very decided signs. The entire blade of the pricked leaf was drooping and over half of it had changed color, the change varying from a dull green to a yellowish. The blade of the next leaf below also drooped badly. The insertion of this leaf was half an inch below that of the pricked leaf. This was the only one of the squash vines which showed constitutional signs at this date (sixteenth day). The twenty-third day nearly all parts of the blade of the pricked leaf and of the one below it were shriveled. The blade of the next leaf up (insertion i inch above) was a fine green but was beginning to droop on one side—in the lower lobe. November 11 the blade of the pricked leaf was brown and dry but the petiole was green and turgid. No additional leaves were affected. November 29 the vine was still alive but stunted and yellowish
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