0090910710

Материал из Антэкология /// Anthecology
Перейти к: навигация, поиск
ATPR 0
AID: 0090910710
Недоступен
Английский
APR 1
APRm
Effect of Pollination Timing on the Rate of Apomictic Reproduction Revealed by RAPD Markers in Paspalum notatum
Annals of Botany, . Т. 89. 2. С. 165170 (6).
Progeny tests employing molecular markers allow the identification of individuals originated by sexual means among the offspring of a facultative apomict. The objective of this work was to evaluate the effect of the pollination timing on the proportion of sexually formed individuals in progenies of a facultative apomictic Paspalum notatum genotype. Progeny families of approx. 30 plants each were generated at five different pollination times: 1–3 d pre‐anthesis; at anthesis; and 2, 4 and 6 d post‐anthesis. Cytoembryological analyses indicated that approx. 17 % of the ovules carried a meiotic cytologically reduced embryo sac in florets formed simultaneously with those used for crosses. The parental plants and the five F1 families were analysed using RAPD molecular markers. Ninety‐five oligonucleotides were assayed on the progenitors in order to search for male‐specific bands. Eight primers presenting clear polymorphic bands were selected for use in the progeny tests. The proportion of sexually produced progeny reached 3·4 % before anthesis and 20 % at anthesis, while pollination after anthesis generated only maternal plants. A second progeny of 97 plants obtained from pollination at anthesis produced 16 off‐type plants (16·5 %), of which only one was a BIII hybrid (2n + n). Our results indicate that pollination at anthesis allows the greatest potential for sexuality to be expressed in this facultative apomictic genotype. When pollination is delayed as soon as 2 d after anthesis, only the aposporous sacs develop endosperm through pseudogamy to set seed.
ТЕМАТИЧЕСКИЕ СПИСКИ

Error: No contents found at URL https://api.altmetric.com/v1/doi/10.1093/aob/mcf024.

Вебметрики
Altmetric.png
Показатель Значение Min Max Av
>%
Место из 1352
Рейтинг публикации PAMS 0 0 0.89992 80.7% 448
Число читателей в Mendeley PAMMR 0 0 35.58 80.92% 285
Число читателей в CiteuLike PAMCULR 0 0 0.1 96.67% 947
Число читателей в Connotea PAMCR 0 0 0 99.7% 700
Число читателей в Altmetric PAMR 0 0 35.68 80.92% 285
AltMetricCircle.jpg
0 0 0.1 95.04% 902
AltMetricCircle.jpg
0 0 0.36 87.72% 1099
AltMetricCircle.jpg
0 0 0 98.89% 37
AltMetricCircle.jpg
0 0 0.06 91.27% 1104
AltMetricCircle.jpg
0 0 0.06 95.71% 270
AltMetricCircle.jpg
0 0 0 98.22% 369
Число цитирований на Peer Review Sites PAMPRSC 0 0 0 100% 1189
AltMetricCircle.jpg
0 0 0 99.85% 898
Число цитирований на Research Highliht Platform PAMRHPC 0 0 0 99.19% 196
AltMetricCircle.jpg
0 0 0 99.93% 898


ОПЫЛИТЕЛЬНЫЕ СВЯЗИ
Связи в публикации не описаны.
ИСХОДЯЩИЕ ССЫЛКИ (0)
ВХОДЯЩИЕ ССЫЛКИ (0)
Todo
TODO: Проверить наличие чистого заголовка
TODO: Форматирование заголовка