Breeding research in sweet potato,Ipomoea batataspoir

✍ Scribed by H. A. Rheenen

• Book ID: 104617250
• Publisher: Springer
• Year: 1964
• Tongue: English
• Weight: 398 KB
• Volume: 13
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00037522

✦ Synopsis

In the sweet potato fruit formation following artificial selfing, artifical cross pollination and natural pollination was investigated. Artificial self-pollination in one case gave a fruit formation of 21.2% ; in five other cases no or hardly any fruit formation took place. Artificial cross-pollination produced a fruit formation varying from 0 to 52.9%. Natural fertilization did not occur in cases when the nearest flowering sweet potato clone stood at a distance of 80 m. When other flowering clones were in the direct vicinity the percentage of fruit formation through natural pollination differed from 0 to 25.2%.

Pre-treatment of sweet potato seed with concentrated sulphuric acid applied during 10 or 20 minutes had a favourable effect on the speed of germination and the germination percentage, also when the seed after treatment was kept in store in or outside an exsiccator for one or two months. The method of scarifying the seed showed a reasonably good influence in this respect. Two different warm water treatments were not or practically not satisfactory.