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SUMMARY Forty-four species of New Zealand lichens, including 22 species of Pseudocyphellaria and seven of Sticta, were assayed for nitrogenase activity by acetylene reduction. Nitiogen fixation was… (More)
Protoplasts from male-sterile Nicotiana tabacum cultivars with cytoplasms of N. suaveolens, N. bigelovii and N. undulata were fused in different pairwise combinations. Cyhrid plants were obtained and… (More)
Glaucocystis nostochinearum is a eukaryotic organism with “chloroplasts” that have usually been assumed to be “cyanelles” — i.e., endosymbiotic cyanobacteria. Previous attempts by others to support… (More)
Three cytoplasmic male-sterile Nicotiana cultivars together with corresponding male-fertile progenitors and restored lines were investigated in order to find possible correlations between respiratory… (More)
SUMMARY Forty-four species of New Zealand lichens, including 22 species of Pseudocyphellaria and seven of Sticta, were assayed for ritrogenase activity by acetylene reduction. Nittogen fixation was… (More)