scholarly journals Influence of different options of intra-varietal pollination on seed productivity and economic values of sweet pepper

2021 ◽  
pp. 3-7
Author(s):  
Luba Pylypenko ◽  
Roman Krutko ◽  
Oksana Shabetya

The use of intra-varietal crossing is an important element to increase seed yield and improve a variety. The aim of the research was to identify the influence of different options of intra-varietal pollination of sweet pepper on seed productivity and other quantitative traits. It has been established, that re-pollination of sweet pepper within the variety in relation to self-pollination causes a reduction in the offspring of the period before fruit ripening by 3–7 days. For all options of pollination, there was also a significant increase in plant height by 7–8 cm, fruit weight by 7–16 g, the number of fruits on a plant by 2–6 units. Different methods of re-pollination of plants significantly affected fruit productivity, increasing it by 62–106 %, increased seed yield from one fruit by 28 %. Seed productivity of sweet pepper plants increased by 78–163 % when re-pollination was used. Options of using the pollen of different flowers (from 2–5 other plants) showed the greatest effect. This technique is one way to increase the yield of sweet pepper seeds

2020 ◽  
Vol 34 (2) ◽  
Author(s):  
Indra Wijaya ◽  
Saripah Ulpah ◽  
Mardaleni

ABSTRACT The purpose of this study was to determine the use of Ageratum by planting among the main plants of cayenne pepper as an effort to control aphids. The design used in this study is the One-way Anova Design (one-lane design), which is planting Ageratum on a chili plant plot combined with ageratum with various densities consisting of 7 experimental treatments, namely: A = Without Ageratum., B = Two clumps / plot, C = Four clumps / plot, D = Six clumps / plot, E = Eight clumps / plot, F = Ten clumps / plot, G = Twelve clumps / plot. Each experimental unit contained 4 chili plants and 2 plants were sampled, making a total of 112 plants and a total of 336 Ageratum plants. The results showed that the planting of Ageratum conyzoides influenced plant height, flowering age, harvest age and fruit weight per plant. The best treatment results in treatments without planting Ageratum (A).The aphids population decreases with the increasing population of Ageratum per plot. planting Ageratum affects the number of pests of each species and the percentage of cayenne pepper affected by the virus is getting lower with increasing population Ageratum per plot. The treatment of Ageratum plants on cayenne pepper plants can control pests and diseases but reduce production. Keywords: Babadotan, Aphids, Cayenne pepper


Agriculture ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 820
Author(s):  
Waldemar Helios ◽  
Anna Jama-Rodzeńska ◽  
Magdalena Serafin-Andrzejewska ◽  
Andrzej Kotecki ◽  
Marcin Kozak ◽  
...  

Sowing depth and density are factors which affect development and yielding due to their influence on plants’ competition for water, light and nutrients. The aim of the present research was to evaluate the effect of sowing depth (5 and 8 cm) and density (45, 60, 75 seeds m2) on the development and yield of two morphotypes of faba bean. Higher plants were found at 8 cm sowing depth in 2011 and 2013, in turn, plant density before harvest, at 5 cm in 2011 and 8 cm in 2013. The greatest seed yield was observed while sowing shallower in 2011 (4.50 t ha−1) and 2012 (6.62 t ha−1), and deeper in 2013 (3.53 t ha−1). Cultivar played in important role in shaping plant height and seed yield in all years of the experiment, as well as in straw yield in 2012. Bobas characterized by the greatest seed productivity in all years of experiment compared to Granit, as well as quantity of straw yield in 2011 and 2012 (3.51 and 4.88 t ha−1, respectively) and therefore can be recommended for cultivation. Taking into account plant density before harvest in 2011–2013 as well as straw yield in 2011 and 2013, the most favorable sowing density is 75 seeds per m2.


Genetika ◽  
2017 ◽  
Vol 49 (2) ◽  
pp. 425-433
Author(s):  
Mehrab Yadegari ◽  
Mohammad Ansari

In this study, seed yield production and its different components fruit length, fruit diameter, fruit length/fruit diameter ratio (FL/FD), diameter of flesh, diameter of seed core, fruit weight, weight of 1000 seed from 24 lines of pumpkin grown in Iran was examined. Twenty-five characters in all plant lines were measured by Descriptor (UPOV) and data were subjected to cluster analysis. Results showed that plants lines were divided in four groups. In all groups, regression comparisons were made for modeling the effect of different characters on seed yield, results also showed that fruit weight and fruit length in all groups had the most direct effect on seed yield. In conclusion, these traits are suggested as the best indirect selection criteria to improve the seed yield genetically in Cucurbita spp. genotypes especially in preliminary generation of breeding and selection programs.


2016 ◽  
Vol 21 (2) ◽  
pp. 124
Author(s):  
Nikardi Gunadi ◽  
R Maaswinkel ◽  
Tonny Koestani Moekasan ◽  
Laksminiwati Prabaningrum ◽  
Subhan ◽  
...  

Di Indonesia, penelitian tentang pengaruh jumlah cabang per tanaman sangat terbatas dan baru dilakukan pada satu varietas paprika, yaitu cv. Ferrari. Dalam rangka meningkatkan pilihan petani terhadap varietas yang dibudidayakan, penelitian tentang pengaruh jumlah cabang per tanaman pada pertumbuhan dan hasil tiga varietas paprika perlu dilakukan. Penelitian dilaksanakan di Rumah Plastik kayu-metal, Kebun Percobaan Balai Penelitian Tanaman Sayuran, Lembang (1.250 m dpl.), Jawa Barat dari bulan Juni 2007 sampai dengan Februari 2008. Penelitian menguji dua faktor perlakuan, yaitu (1) jumlah cabang per tanaman dengan dua taraf, yaitu dua dan tiga cabang per tanaman serta (2) varietas dengan tiga taraf yaitu varietas Spider, Chang, dan Athena. Percobaan menggunakan rancangan acak kelompok dengan tiga ulangan. Hasil penelitian menunjukkan bahwa jumlah cabang per tanaman berpengaruh nyata terhadap pertumbuhan dan hasil paprika. Tanaman paprika dengan sistem tiga cabang menunjukkan pertumbuhan yang lebih tinggi dan berbeda nyata dibandingkan dengan sistem dua cabang terutama pada  umur 11 minggu setelah tanam. Tanaman paprika dengan sistem tiga cabang memberikan hasil total dan hasil kelas buah &gt;200 g berturut-turut lebih tinggi  yaitu sebesar 9,3 dan 9,1% daripada tanaman paprika dengan dua cabang. Total hasil varietas Athena dan Spider lebih tinggi dan berbeda nyata dibandingkan dengan varietas Chang, tetapi varietas Chang menghasilkan jumlah buah yang lebih banyak dibandingkan dengan dua varietas lainnya. Hasil penelitian ini dapat digunakan sebagai rekomendasi untuk pemilihan varietas dan teknik budidaya paprika dalam kondisi rumah plastik di Indonesia.<br /><br /><br />In Indonesia, research on the effect of stem number per plant is very limited and it was conducted only in one sweet pepper variety namely Ferrari. In order to increase the possibility of farmers to choose good cultivated varieties, an experiment needs to be conducted to determine the effect of stem number per plant on the growth and yields of three sweet pepper varieties. This experiment was carried out in the wood-metal plastichouse at the experimental field of the Indonesian Vegetable Research Institute (IVEGRI), Lembang (1,250 m asl.), West Java from June 2007 to February 2008. Two factor treatments tested were (1) number of stem per plant with two levels i.e. two stems and three stems per plant and (2) varieties of sweet pepper i.e. Spider, Chang, and Athena. The treatment combinations were arranged in a completely randomized block design with three replications. The results indicated that number of stem per plant significantly affected the growth and yield of sweet pepper. The plant height of sweet pepper plants grown with three stems were significantly higher than those with two stems, especially after 11 weeks after planting. The plants grown with three stems per plant gave higher total yield and yield of class &gt;200 g up to 9.3 and 9.1%, respectively than the ones grown with two stems per plant. The total yield and yield of class &gt; 200 g of Athena and Spider were significantly higher than those of Chang. However, Chang yielded more number of fruits compared to Athena and Spider. The results can be used as a recommendation in variety selection and cultivation of sweet pepper grown under plastichouse  conditions in Indonesia.<br /><br />


Genetika ◽  
2011 ◽  
Vol 43 (1) ◽  
pp. 113-128 ◽  
Author(s):  
H.K. Yadav ◽  
S.P. Singh

Generation mean analysis was carried out using five parameter model on five cross combinations with five generations i.e. parents, F1s, F2s, and F3s randomly selected from partial diallel breeding experiment. The aim of study was to investigate the mode of gene actions involved in the inheritance of quantitative traits viz. days to 50% flowering, plant height, leaves/plant, capsules/plant, capsule size, capsule weight/plant, seed yield/plant and opium yield/plant. C and D scaling test showed the presence of non allelic interaction in the inheritance for all the traits except for plant height, seed yield/plant (ND1001xIS13) and capsule size (NBR5xND1002) which showed non interacting mode of inheritance. In general, the interaction effect together i.e. additive x additive [i] and dominance x dominance [l] found in higher magnitude than the combined main effects of additive [d] and dominance [h] effects for all the traits in all the five crosses. Dominance effect [h] was found pronounced for most of the traits except days to 50% flowering where additive effect [d] was found prevalent. Among the interaction effects dominance x dominance [l] was predominant over additive x additive [i] for all traits in all the five crosses except capsules/plant and capsule size in cross ND1001xNBRI11 and leaves/plant and opium yield/plant in cross NBRI5xND1002. As per sign of dominance (h) and dominance x dominance (l) duplicate epistasis were noticed for all the traits except plant height and leaves/plant in cross ND1001xUO1285. Potence ratio indicated presence of over dominance for almost all the traits. Substantial amount of realized heterosis, residual heterosis in F2 and F3 progenies and high heritability with moderate to high genetic advance in F2 progeny and significant correlation among important traits in desirable direction were observed. A breeding strategy of diallel selective mating or biparental mating in early segregating generation followed by recurrent selection may be used for genetic improvement.


2021 ◽  
Vol 58 (3) ◽  
pp. 88-93
Author(s):  
Mirjana Jankulovska ◽  
Dragana Rajković ◽  
Dragana Miladinović ◽  
Sreten Terzić ◽  
Nada Grahovac ◽  
...  

The genetic variability of 13 rapeseed genotypes created in Serbia was assessed at the Institute of Field and Vegetable Crops, Novi Sad, in three consecutive years. The genotypes were evaluated and classified based on 10 quantitative traits (plant height, height to the first branch, stem width, number of lateral branches, number of leaves, number of pods, seed yield per plant, 1000 seed weight, oil content and protein content), using principal component analysis (PCA) and two-way cluster analysis. The first four PCs with eigenvalues >1 contributed to 83% of the total explained variance. The PC analysis revealed that plant height, height to the first branch, number of lateral branches and number of leaves contributed maximum to the total divergence of the material. The genotypes were classified in two main clusters: the first cluster comprised three genotypes, while the other genotypes belonged to the second cluster which can further be divided to two subclusters. One genotype was not classified in these two clusters. The selected genotypes that have desirable traits may be used in hybridization programs for improvement of seed yield and traits that contribute to seed yield most.


2018 ◽  
Vol 51 (2) ◽  
pp. 71-82 ◽  
Author(s):  
Eric Bertrand Kouam ◽  
Joseph Roger Dongmo ◽  
Joseph Fovo Djeugap

Abstract Genetic variation of quantitative traits is a prevalent characteristic among cultivated tomato varieties. Twenty tomato genotypes comprising indigenous varieties and commercial cultivars, cultured in the Western Region of Cameroon were evaluated using fourteen quantitative traits for disease resistance, phenotypic divergence and heritability estimates. The experiment was carried out using a randomized completed blocks design with three replications. Data collections were disease characteristics, plant development features and yield attributes. The analysis of variance revealed significant variation among genotypes for all the experimental quantitative traits. Hybrid varieties had significantly more fruit yield (1066.00 g/plant), single fruit weight (57.28 g), fruit diameter (4.47 cm) and pericarp thickness (0.54 cm) compared to standard and indigenous varieties. These indigenous varieties were significantly more resistant to late blight, alternaria leaf spot and viral diseases. They also had significantly higher collar diameter (16.30 mm), number of primary branches per plant (8.45), number of fruit per plant (31.58) and plant height (88.33 cm) compared to standard and hybrid plants. The genotype local 2 was the third most productive (1576.39 g / plant) after Rio Semagri (1984.80 g/plant) and Sakato F1 (1691.69 g/plant). Heritability and genetic advance estimates were high for twelve of the fourteen studied quantitative traits. Fruit yield showed significant positive correlations with single fruit weight and number of fruit per plant. However, significant negative correlation was found between fruit yield and time to 50 % flowering, 50 % fruiting, 50 % maturity and viral disease. The first three and the first four components in the principal component analysis explained, respectively, 77.85 % and 88.38 % of the total variation observed among genotypes. The first component determined 41.42 % of the total variation, dominated by the collar diameter, the number of primary branches per plant and plant height. This study clearly indicated that indigenous varieties are the most disease resistant genotypes and are having substantial fruit yield (945.30 g/plant) similar to standard varieties and at a touching distance to hybrid cultivars.


2021 ◽  
Vol 50 (3) ◽  
pp. 453-465
Author(s):  
Ravindra Kumar ◽  
K Srivastava

Generation mean analysis is a key determinant in designing the appropriate breeding approaches for implementing new desirable character/s in crop varieties and also in studying inheritance of quantitative traits. Parents, F1, F2 and backcrosses exhibited significant digenic interactions in the majority of cross combinations in tomato. Cross combinations and characters indicated the adequacy of simple additive dominance for 50% flowering (CO3 х Floradade, Pant T3 х Azad T5), branches/plant and plant height (CO3 х Floradade, Pant T3 х Kashi Sharad), and fruit/cluster (CO3 х Floradade) indicating absence of non-allelic interactions. Duplicate type of epistasis occurred for 50% flowering (CO3 х Floradade, Kashi Amrit х Kashi Sharad), branches/plant (CO3 х Floradade, Kashi Amrit х Kashi Sharad, Pant T3 х Kashi Sharad), plant height (CO3 х Floradade, Pant T3 х Kashi Sharad), fruit/plant (CO3 х Floradade, Pant T3 х Azad T5, Kashi Amrit х Kashi Sharad, Pant T3 х Kashi Sharad), fruit weight (CO3 х Floradade, Pant T3 х Azad T5), fruit/cluster (Kashi Amrit х Kashi Sharad, Pant T3 х Kashi Sharad), yield/plant (CO3 х Floradade, Punjab Upma х Azad T5, Pant T3 х Kashi Sharad) indicating selection strength should be lenient in the earlier and rapid in later generations because advancement should be through selection. Characters governed by additive components were predominant in fruit/plant and plant height, indicating direct selection for improvement of these traits. Bangladesh J. Bot. 50(3): 453-465, 2021 (September)


Author(s):  
Subhadra Pattanayak ◽  
Gabrial M. Lal ◽  
Velugoti Priyanka ◽  
Avneeshmani Tripathi

A set of twenty one chickpea genotypes were grown and asses to know the amount of genetic variability, genetic association seed yield and thirteen quantitative traits, direct and indirect effect of yield contributing characters on seed yield. Correlation coefficient analysis revealed that seed yield per plant exhibited positive and significant association with 50% pod setting and plant height at genotypic and phenotypic levels. Correlation coefficient analysis revealed that seed yield per plant exhibited positive and significant association with 50% pod setting and plant height at genotypic and phenotypic levels. Path analysis revealed that characters such as plant height, number of primary branches, number of seeds per pod, hundred seed weight, biological yield and harvest index have positive direct effect on seed yield per plant at genotypic level.


Agrologia ◽  
2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Ajang Maruapey

This study aims to determine the effect of organic fertilizer waste biogas cow dung on the growth and production of red curly chili plants. The experiment was carried out at Mariyat Village Farmer Land, Mariat District, Sorong District, from August to October 2016. The experiment used 4 treatment of organic fertilizer of cow dung biogas waste with dosage 0, 6, 9, 12 kg / plot, designed using random block design with repeated three times. The results showed that, the application of organic fertilizer biogas waste cow dung affect the plant height, the number of productive branches, the age of flowering, the number of fruit, fruit length, fruit weight per plant and the production of red curly pepper plants. Giving at a dose of 12 kg per plot gives a better effect than with a lower dose.


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