## i c h i g m Earlier study has shown that all agents which cause artificial parthenogenesis in the sea-urchin egg produce a coagulation in the cytoplasm (Heilbrunn, '15). This does not mean that all types of coagulative change cause the egg to begin its development, for, as is fairly obvious, so
Pairing and Parthenogenesis in Saw-flies
โ Scribed by PEACOCK, A. D.
- Book ID
- 109475175
- Publisher
- Nature Publishing Group
- Year
- 1922
- Tongue
- English
- Weight
- 119 KB
- Volume
- 110
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/110215a0
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Diploid parthenogenetic and androgenetic plants were found in certain interspecific hybrid combinations in diploid Solarium. Self progenies of parthenotes of S. verrucosum appeared highly uniform and 100% homozygous for resistance to Race 1.2.3.4 of Phytophthora infestans. They can be of prime impor
In this investigation we have attempted (1) to observe the occurrence and (2) to follow the behavior of mutations in parthenogenesis. We have found that mutations occur in parthenogenesis and that these mutant characters after their origin undergo further mutative changes. (3) We have followed cert