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Line × tester analysis in rapeseed: Identification of superior parents and combinations for seed yield and its components

100%

Rameeh V.

Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia

2015

vol. 70

issue 2

This research was carried out to investigate the genetic structure of the 20 F1s rapeseed hybrids established from five female moderate maturity lines and four early maturity male testers, to determine parents showing general combining ability (GCA) and detect crosses showing specific combining ability (SCA). Significant variance of parents and crosses for all the traits indicated the existence of significant genetic variation among the parents and their F1 cross combinations. Significant variance of parents vs. crosses revealed significant average heterosis for all the traits except first pod height and seeds per pod. High narrow-sense heritability estimates for number of branches and pods length, indicate the importance of additive genetic effects for these traits. Hybrid performance was generally better than parental performance for all the traits except number of branches and also the genetic variation of lines × testers for all the traits were more than lines and testers. Most of the crosses with high mean value of pods per plant were yielded from the parental lines with high mean value of this trait. The crosses including L41×Foma2, Zafar×R42 and L22B×R38 with significant positive SCA effects of seed yield had also high mean values (3400, 3311.3 and 2904.2 kg ha-1 , respectively) of this trait.

Agronomic performance of autumn- and winter-cropped Indian mustard (Brassica juncea L.) in response to varying levels of nitrogen fertiliser

88%

Al-Hoda Asghari B., Yousefi M., Możdżeń K., Puła J., Zandi P., Yaosheng W.

Annales Universitatis Paedagogicae Cracoviensis Studia Naturae

2020

83-95

Gorczyca sarepska = kapusta sitowata (Brassica juncea L. Czern), jest charakterystyczna dla upraw w regionach o krótkich porach roku oraz mniejszych ilościach opadów. Obecnie w Iranie brakuje wystarczającej wiedzy rolniczej do wydajnej produkcji gorczycy. W artykule tym, będącym formą pracy przeglądowej i badawczej jednocześnie, skoncentrowano się na produkcji gorczycy w półsuchym regionie oraz ocenie jakości jej oleistych nasion. Celem pracy było również porównanie nawożenia pięcioma różnymi dawkami azotu (w postaci mocznika), w trakcie dwukrotnego wysiewu oraz zbadanie wpływu tych dawek na wzrost, plon nasion i niektóre właściwości agronomiczne gorczycy, w warunkach agroklimatycznych Takestanu (Iran). Wyniki pokazały, że sezon uprawy oraz dawki azotu, miały znaczący wpływ na wzrost roślin, plon biomasy, liczbę owoców – łuszczyn na roślinę, zawartość oleju siewnego i ogólny plon ziarna. Data sadzenia, warunki środowiskowe, nawożenie są ważnymi czynnikami wpływającymi na jakość i ilość plonów gorczycy.

Indian mustard (Brassica juncea L. Czern) cultivation is suggested for regions with short seasons and low rainfall. Although there have been many studies conducted on agronomic production of mustard in Iran, the information regarding the interactive impact of cropping seasons and nitrogen fertiliser on growth characteristics and yield quality of mustard plant is still insufficient and requires further investigation. This study focused on the possible implications of different cropping seasons and different nitrogen levels on selected agronomic traits in mustard. In this experiment, five different doses of nitrogen and two sowing periods were used to assess for their combined effects on the growth parameters, seed yield and agronomic characteristics of mustard in the semi-arid climatic conditions of Takestan. The results revealed that cultivation seasons and nitrogen rates had a significant effect on plant height, biomass yield, number of siliques per plant, seed oil content and seed yield.

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1 Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia

1 Annales Universitatis Paedagogicae Cracoviensis Studia Naturae

1 Al-Hoda Asghari B.

1 Możdżeń K.

1 Puła J.

1 Rameeh V.

1 Yaosheng W.

1 Yousefi M.

1 Zandi P.

1 2020

1 2015

Search results

Line × tester analysis in rapeseed: Identification of superior parents and combinations for seed yield and its components

Agronomic performance of autumn- and winter-cropped Indian mustard (Brassica juncea L.) in response to varying levels of nitrogen fertiliser