Matromorphy in Pisum sativum L

Area of Science:

• Plant genetics
• Breeding technology
• Seed development

Background:

• Developing pure breeding lines is crucial for plant genetics and breeding.
• Traditional methods for achieving homozygosity can be time-consuming.
• Matromorphy, or maternal seed development, presents a potential shortcut.

Purpose of the Study:

• To investigate the feasibility of inducing matromorphy in Pisum sativum L.
• To assess the efficiency of matromorphy for producing homozygous lines.
• To explore alternative breeding tools for plant improvement.

Main Methods:

• Pollination of maternal pea lines (homozygous recessive or heterozygous dominant markers) with Lathyrus odoratus and Pisum sativum L.
• Induction of matromorphy using prickle pollination, irradiated pollen, and IAA treatment.
• Evaluation of M1 matromorphs and genetic assessment of M2 generation for homozygosity.

Main Results:

• Successful induction of matromorphy varied with treatments, showing pod set rates from 0% to 28%.
• Promising matromorphs were identified and studied for genetic homozygosity.
• Mechanisms of matromorphic origin were discussed, supporting its induction in peas.

Conclusions:

• Matromorph seed development is a viable method for rapidly producing homozygous stocks in peas.
• This technique offers an alternative to recurrent backcrossing in plant breeding.
• Recovery of maternal and paternal markers suggests broad applicability in breeding programs.