Who discovered cytoplasmic male sterility in maize?

Background. Joseph Gottlieb Kölreuter was the first to document male sterility in plants. In the 18th century, he reported on anther abortion within species and specific hybrids. Cytoplasmic male sterility (CMS) has now been identified in over 150 plant species.

What is cytoplasmic male sterility in plants?

Cytoplasmic male sterility (CMS), a condition under which a plant is unable to produce functional pollen, is widespread among higher plants. CMS systems represent a valuable tool in the production of hybrid seed in self-pollinating crop species, including maize, rice, cotton, and a number of vegetable crops.

Why do males have cytoplasmic sterility?

Cytoplasmic male sterility is used in agriculture to facilitate the production of hybrid seed. Hybrid seed is produced from a cross between two genetically different lines; such seeds usually result in larger, more vigorous plants.

Which of the following method is used to overcome cytoplasmic male sterility?

Cytoplasmic male sterility lines can be produced using cybridization method. Herbicide-tolerant plants (brassica) can be produced.

How is cytoplasmic male sterility used in maize breeding?

In hybrid maize breeding. Cytoplasmic male sterility is an important part of hybrid maize production. The first commercial cytoplasmic male sterile, discovered in Texas, is known as CMS-T. The use of CMS-T, starting in the 1950s, eliminated the need for detasseling.

How does cytoplasmic male sterility ( CMS ) work?

Cytoplasmic male sterility is governed by cytoplasmic or plasma genes. CMS is maternally inherited phenomenon. It doesn’t follow Mendelian pattern of inheritance. Progeny of male sterile plant is always male sterile, as its cytoplasm is derived entirely from female gamete. CMS is not very common in plant kingdom.

Where was cytoplasmic male sterility first discovered?

Cytoplasmic male sterility is an important part of hybrid maize production. The first commercial cytoplasmic male sterility, discovered in Texas is known as CMS-T. The use of CMS-T, started in the 1950s eliminated the need for detasseling.

How is cytoplasmic male sterility inherited in plants?

CMS is maternally inherited phenomenon. It doesn’t follow Mendelian pattern of inheritance. Progeny of male sterile plant is always male sterile, as its cytoplasm is derived entirely from female gamete. CMS is not very common in plant kingdom. Nuclear genotype of male sterile line is almost identical to that of the recurrent pollinator strain.