self-sterility

Another large tree in eastern Virginia produces many burs but the nuts fail to develop, indicating self-sterility.

Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948

Other factors, such as self-sterility, may be wholly responsible for at least the lightness of crops.

Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting New York City, September 3, 4 and 5, 1924

In the self-sterility of filberts the failure of self-pollination results in an absence of nuts or in very few rather than a full crop of seedless fruits such as the common chestnut and the Weschcke black walnuts produces.

Growing Nuts in the North A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin Carl Weschcke 1933

All these methods are common, except perhaps the second; but there are many flowers in which the pollen from another plant is prepotent over the pollen from fertilisation, the same flower, and this has nearly the same effect as self-sterility if the flowers are frequently crossed by insects.

Darwinism (1889) Alfred Russel Wallace 1868

This paper gives a full account of the self-sterility of Oncidium in cases where the pollen was efficient in fertilising other individuals of the same species and of distinct species.

More Letters of Charles Darwin — Volume 2 Charles Darwin 1845

I am sorry about delay [of] your orchid paper; I should be glad of abstract of your new observations of self-sterility in orchids, as I should probably use the new facts.

More Letters of Charles Darwin — Volume 2 Charles Darwin 1845