Association between partial resistance to S-(2-aminoethyl)L-cysteine and increased methionine levels in inbred lines of rye
✍ Scribed by M. Śmiech; E. Cywińska-Smoter; S. Malepszy
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 429 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0014-2336
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✦ Synopsis
223 highly inbred lines of winter rye were investigated, using the in vitro culture of mature embryos, for their resistance to lysine structural analogue S-(2-aminoethyl)L-cysteine (AEC). The AEC concentration 0.20mM was comparable to that in other cereals.
Embryos from ca. 3% of lines developed into plantlets with normal or reduced shoots and were classified as either resistant (r) or partly resistant (pr). The (r) and (pr) traits were recessive, nonallelic and most probably without maternal effect -as suggested by F1 analysis.
The (r) and (pr) lines had not changed the lysine content but surprisingly elevated methionine content. The possible factors which brought about such effect are discussed. Testing of (pr) lines for ethionine resistance showed partial resistance of one of them.
* Properly developed plantlets, more than 5 cm high with secondary and tertiary roots; ** Plantlet 2-5 cm high with short (lower than 1 cm) roots; *** nr -non-resistant, dying embryos, rudimentary coleoptile without roots.