Isolated Microspore Cultures of Triticale (× Triticosecale Wittm.)

Area of Science:

• Plant Biotechnology
• Agricultural Science
• Genetics

Background:

• Microspore embryogenesis (ME) offers a rapid route to doubled haploid (DH) plants for crop improvement.
• Current ME protocols are often ineffective and genotype-dependent, limiting practical application in many crop species.
• Triticale breeding materials show moderate responsiveness to ME, necessitating optimized protocols for specific genotypes.

Purpose of the Study:

• To develop an optimized microspore embryogenesis protocol for triticale.
• To investigate the role of redox homeostasis in ME induction and DH plant production.
• To enhance microspore viability and embryo-like structure (ELS) development using reduced glutathione (GSH).

Main Methods:

• Modification of existing microspore embryogenesis protocols.
• Application of reduced glutathione (GSH) during ME induction.
• Evaluation of microspore viability and embryo-like structure (ELS) development in triticale.

Main Results:

• The modified protocol using GSH demonstrated improved microspore viability.
• Reduced glutathione (GSH) application promoted the development of embryo-like structures (ELS).
• The protocol showed potential for enhancing DH plant production in moderately responsive triticale genotypes.

Conclusions:

• Reduced glutathione (GSH) is a key factor in maintaining microspore viability and promoting ELS development during ME.
• The optimized protocol offers a promising approach for efficient doubled haploid (DH) plant production in triticale.
• This advancement can accelerate breeding programs by providing homozygous lines more rapidly.