التفاصيل البيبلوغرافية
| العنوان: |
Do mutations modifying the leaf area (nr3) and the number of potential seeds (dfc) influence photosynthetic gas exchange characteristics in common buckwheat Fagopyrum esculentum Moench? |
| Alternate Title: |
Ali mutaciji, ki spreminajata listno površino (nr3) in število potencialnih semen (dfc) vplivata na značilnosti fotosintezne izmenjave plinov pri navadni ajdi (Fagopyrum esculentum Moench)? (Slovenian) |
| المؤلفون: |
FESENKO, Ivan N., AMELIN, Alexandr V., FESENKO, Aleksey N., BIRYUKOVA, Oksana V., ZAIKIN, Valeriy V., CHEKALIN, Evgeniy I., IKUSOV, Roman A. |
| المصدر: |
Acta Agriculturae Slovenica; Oct2023, Vol. 119 Issue 3, p1-7, 7p |
| مصطلحات موضوعية: |
BUCKWHEAT, PLANT mutation breeding, GAS exchange in plants |
| Abstract (English): |
Contemporary buckwheat breeding in Russia is based mainly on a Mendelian mutation det. Some additional mutations are being considered for inclusion in buckwheat breeding programs. Among them are the nr3 (narrow leaf 3) and dfc (determinate floret cluster). We evaluated the effects of the mutations on both the characteristics of photosynthetic gas exchange and the number of seeds per plant. The nr3 reduces the leaf surface area by 1.4 times. The mutant plants show some compensatory increase in photosynthesis rate, which, however, is not enough to reach the level of the source ability as in the wild type since the number of seeds per plant is significantly decreased. The possibility of using this mutation in buckwheat breeding depends on the accumulation of modifiers that increase either leaf size or photosynthesis rate. The reduced number of flowers of the dfs mutation is compensated by an increase in flower fertility, and the number of seeds per plant does not change compared to the wild type. It explains the absence of differences between the dfs and wild type in terms of the photosynthesis rate. This experiment did not reveal any problems for using the dfc mutation in breeding. In general, the results of the work support the photosynthesis rate in buckwheat is regulated based on the source-sink ratio. [ABSTRACT FROM AUTHOR] |
| Abstract (Slovenian): |
Sodobno žlahtnjenje ajde v Rusiji temelji v glavnem na Mendlovi mutaciji det a so bile za vključitev v žlahtniteljske programme predlagane še dodatne mutacije. Med njimi sta mutaciji nr3 (ozki listi 3) in dfc (determinantno socvetje). V raziskavi smo ovrednotili vplive obeh mutacij na značilnosti fotosintezne izmenjave plinov in na število semen na rastlino. Mutacija nr3 zmanjša listno površino za 1,4 krat. Mutantne rastline kažejo nekatere kompenzacijske mehanizme v velikosti fotosinteze, ki pa ne zadoščajo za doseganje ravni pri divjem tipu, kar kaže značilno zmajšanje števila semen na rastlino. Možnost uporabe te mutacije v žlahtniteljskih programih ajde je odvisna na kopičenju sprememb, ki povečujejo listno površino ali velikost fotosinteze. Zmanjšano število cvetov pri mutaciji dfs je kompenzirano s povečanjem plodnosti cvetov, pri čemer število semen na rastlino ni spremenjeno v primerjavi z divjim tipom. To razloži tudi odsotnost razlike v velikosti fotosinteze med dfs in divjim tipom. V poskusu tudi ni bilo ugotovljenih nobenih problemov v uporabi fc mutacije pri žlahtnenju. Na splošno rezultati raziskave kažejo, da je velikost fotosinteze pri navadni ajdi uravnavana z razmerjem vir: ponor. [ABSTRACT FROM AUTHOR] |
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