scholarly journals Effect of the Rootstock on Certain Fruit Characters of the Chironja

1969 ◽  
Vol 56 (3) ◽  
pp. 301-306
Author(s):  
Agripino Pérez ◽  
Ramón Bosque Lugo

Chironja trees grafted on native grapefruit, sour orange, and Cleopatra mandarine rootstock were planted on Alonso clay and Coto clay at Adjuntas and Isabela Substations, respectively. Only native grapefruit and sour orange rootstocks were compared at Isabela. The experiments were conducted for the purpose of determining the possible effect of the three rootstocks on fruit weight, peel weight, number of seeds and segments (carpels) per fruit, and refractometer readings of the fruit (Brix) harvested from the grafted chironja trees. The most important results obtained were: Trees at Adjuntas grafted on grapefruit rootstock yielded heavier chironja fruits in 1962 and 1963, and a heavier peel in 1963, than those grafted on sour orange or Cleopatra mandarine rootstocks. In 1962, peel weights of chironja fruits from trees grafted on sour orange exceeded those obtained from trees grafted on mandarine rootstock. Fruits from chironja trees at the Isabela experiment grafted on sour orange rootstock had a significantly higher Brix than those from trees grafted on grapefruit rootstock, but no significant differences occurred among the other characters studied. No significant differences were found between chironja fruits from trees grafted on any of the three rootstocks as far as number of seeds and segments (carpels) per fruit, suggesting that rootstock species does not affect these characters. These studies suggest in general that the fruit from chironja trees grafted on grapefruit rootstock is larger, but less sweet, than fruit from trees grafted on either sour orange or Cleopatra mandarine rootstocks.

2000 ◽  
Vol 78 (5) ◽  
pp. 646-654
Author(s):  
Johanne Brunet ◽  
Christopher Mundt

Wheat genotypes susceptible to different races of a pathogen, Puccinia striiformis, were planted in pure stands and in three different 1:1 mixtures, in both the presence and absence of disease, in two sites, and over 3 years. Using analyses of variance, we tested whether disease and intergenotypic competition influenced a genotype's fitness and whether significant interactions existed between the effects of disease and competition on genotype fitness. Seed weight, number of inflorescences per seed planted, seeds per inflorescence, and absolute fitness were estimated for each genotype in each treatment. Absolute fitness was determined as the number of seeds collected per seed planted. Disease reduced seed weight. The other fitness measures were influenced by either disease or competition, and the impact of each factor often varied among site-year combinations. In general, interactions between the effects of disease and competition on genotype fitness were not significant. The few significant interactions indicated a less than additive effect of competition and disease on genotype fitness. The overall lack of interaction may be, in part, due to lesser disease levels in mixed as compared with pure stands, or reduced level of competition under diseased conditions.Key words: pathogens, competition, plant fitness, stripe rust, wheat.


2012 ◽  
Vol 64 (3) ◽  
pp. 53-58 ◽  
Author(s):  
Anna Kisiała ◽  
Dorota Olszewska ◽  
Aleksandra Niklas-Nowak ◽  
Paweł Nowaczyk

Eight anther-derived DH lines of pepper hybrids: two red-fruited (AP14, AP15) and two yellow lines (AP25 and AP32) of <i>C. annuum</i> (ATZ1 × PO)F<sub>2</sub>, two lines of (<i>C. frutescens</i> × <i>C. annuum</i>)F<sub>1</sub> (FA1, FA2), and two of (<i>C. frutescens</i> × <i>C. chinense</i>)F<sub>1</sub> (FCH2, FCH3), were studied regarding important morphological plant and fruit characters. <i>C. annuum</i> breeding line 'ATZ1' was used as a standard. The following traits were evaluated: total fruit yield, fruit weight, weight of placenta with seeds, technological matter, pericarp thickness, extract content, dry matter content, weight and number of seeds per fruit. The level of homogeneity within the DH lines was analysed with a one-way analysis of variance, additionally the values of coefficient of variation (CV) were determined for the tested plant characters. The highest phenotypic uniformity was noted for the red-fruited lines obtained from anthers of (ATZ1 × PO)F<sub>2</sub> and for the DH lines of (<i>C. frutescens</i> × <i>C. annuum</i>) F<sub>1</sub>, while the least uniform were FCH2 and FCH3 lines of (<i>C. frutescens</i> × <i>C. chinense</i>)F<sub>1</sub>. The DH lines AP14 and AP15, as well as FA1 and FA2 were phenotype homogeneous in respect of weight of fruit, technological matter, pericarp thickness and extract content. For these parameters, also the values of CV were the lowest. Statistically significant interline polymorphism between the androgenic lines of the same origin was detected among the lines of <i>C. annuum</i> (ATZ1 × PO)F<sub>2</sub>.


1970 ◽  
Vol 44 (2) ◽  
pp. 229-232 ◽  
Author(s):  
M Ibrahim ◽  
MZ Shafique ◽  
MOH Helali ◽  
MM Rahman ◽  
SK Biswas ◽  
...  

An investigation was carried out at the Bangladesh Council of Scientific and Industrial Research (BCSIR) Laboratories. Binodpur Bazar, Rajshahi during the period November 2006 to March 2007 to evaluate the physiological and biochemical composition of five cultivars of ber (jujube). Among the fruit cultivars, Thai kul produced the largest fruits (51.85 g each) having the highest pulp (92.38%) and juice (60%) and also the lowest vitamin C content (21.13 mg/100g). The fruit weight of the other cultivars varied from 9.6 0 to 45.09g. The seed weight ranged from 6.38 to 15.00%. Sugar content varied from 6.25% to 9.72% and starch content ranged from 0.715% to 0.963%. The apple kul had the highest qualitative score through organoleptic test while Thai kul had the lowest. The highest edible portion (pulp content) was in Narikeli kul (93.61%) and that of lowest in Apple kul (85.38%) and Local kul (85.38%) respectively. Considering all, fruit characters and yield are potential. Keywords: Ber, Cultivar, Fruit characters, Quality, Yield. DOI: 10.3329/bjsir.v44i2.3678 Bangladesh J. Sci. Ind. Res. 44(2), 229-232, 2009


1972 ◽  
Vol 52 (6) ◽  
pp. 1067-1072 ◽  
Author(s):  
M. C. J. VAN ADRICHEM

Several population samples of Rubus idaeus subspp. strigosus Michx. (raspberries) were collected in British Columbia and northern Alberta and a number of characters were studied and compared with the cultivar Trent. Significant differences between populations were found for cane length, number of buds per cane, percentage of buds growing, number of inflorescences and flowers per bud, fruit and seed weight. There was a positive correlation between the total seed weight and the number of seeds, and between the total seed and fruit weight. No distinct types could be established based on location or elevation. None of the populations showed significantly better winter hardiness than the cultivar Trent, and although some had a specific character that was superior, none was found to have overall superiority.


2017 ◽  
Vol 39 (4) ◽  
Author(s):  
NICOLE TREVISANI ◽  
RITA CAROLINA DE MELO ◽  
MAURO PORTO COLLI ◽  
JEFFERSON LUÍS MEIRELLES COIMBRA ◽  
ALTAMIR FREDERICO GUIDOLIN

ABSTRACT Knowledge about associations between traits is fundamental for plant breeding, since indirect selection can accelerate the development of promising genotypes. This study assessed the magnitude of associations between agronomically important traits in fisális (Physalis peruviana L). The experiment was conducted in Lages, Santa Catarina, and the treatments consisted of six fisális populations. The experiment was arranged in a randomized block design, with two replications and seven plants per plot. The correlations between traits were estimated based on the Pearson correlation coefficients and partitioned into direct and indirect effects through path analysis. Fruit weight was positively correlated with number of seeds (0.874), equatorial fruit diameter (0.738) and polar fruit diameter (0.672). By path analysis, number of seeds was identified as the trait with the highest direct contribution to fruit weight. The high phenotypic correlations between the equatorial and polar fruit diameters with fruit weight were mainly due to the indirect effect via number of seeds (0.505 and 0.459). The selection for heavier fisális fruits was strongly influenced by number of seeds, i.e., this trait should be taken into account for selection.


Nativa ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 138
Author(s):  
Greiciele Farias da Silveira ◽  
Ana Aparecida Bandini Rossi ◽  
Uéliton Alves de Oliveira ◽  
Tatiane Lemos Varella ◽  
Fernanda Saragosa Rossi ◽  
...  

O objetivo do presente trabalho é caracterizar biometricamente os frutos e sementes de Passiflora cristalina Vanderplank & Zappi ocorrentes na região de Alta Floresta, Mato Grosso. Foram coletados em 2013 um total de 100 frutos maduros de 15 genótipos e destes foram selecionadas 300 sementes aleatoriamente. Os frutos foram analisados quanto ao comprimento, largura, espessura, peso, espessura da casca, o peso da polpa, o peso das sementes/fruto, número de sementes/fruto e teor de sólidos solúveis. As sementes foram avaliadas em relação ao comprimento, largura, espessura e índice de volume. As características biométricas foram analisadas mediante distribuição de frequência calculando-se o coeficiente de correlação de Spearman e o nível de significância através do teste T. O comprimento do fruto correlacionou-se positivamente com a largura e peso do fruto, espessura da casca e com peso das sementes, não havendo uma correlação com o número de sementes por fruto. Houve uma ampla distribuição de frequência das características avaliadas nos frutos, com exceção do peso das sementes. A alta variação fenotípica encontrada para a maioria das características avaliadas nos frutos e sementes de P. cristalina revela que a espécie tem divergência genética a ser utilizado em programas de seleção e conservação de recursos genéticos.Palavras-chave: divergência genética, maracujá, recursos genéticos. BIOMETRIC ANALYSIS OF FRUITS AND SEEDS OF Passiflora cristalina Vanderplank & Zappi ABSTRACT: The present work has presented the fruits and seeds of Passiflora cristalina Vanderplank & Zappi occurring in the region of Alta Floresta, Mato Grosso. A total of 100 mature fruits of 15 genotypes were collected in 2013 and 300 seeds were randomly selected. The fruits were inert to the length, thickness, thickness, weight, bark thickness, pulp weight, seed/fruit weight, number of seeds / fruit and soluble solids content. The seeds were evaluated for length, width, thickness and volume index. The biometric characteristics were analyzed with the calculation frequency calculated with the Spearman correlation coefficient and the level of significance throughout the T test. Fruit weight was correlated with fruit width and weight, bark thickness and weight of the fruits. Seeds without a key with the number of seeds per fruit. There is an offer of food distribution in the fruits, with the exception of the weight of the seeds. The high phenotypic variance found for a greater number of species evaluated in fruits and seeds of P.cristalina reveals that a type of genetics has been characterized in programs of selection and conservation of genetic resources.Keywords: genetic divergence, passion fruit, genetic resources.


2021 ◽  
Author(s):  
Guggalada Govardhana Yadav ◽  
Niranjana Murthy Hosakatte

Abstract Balanites roxburghii is an important medicinal plant of India and is used in the treatment of various diseases and disorders. Seeds possess a high amount of oil and could be used in biodiesel production. This plant is also a source of diosgenin, a therapeutically useful compound. Domestication of this plant provides opportunities for the commercial production of those valuable products. Hence the present study was planned to assess the variability of B. roxburghii in Southern India and identifying the superior genotypes based on the morphological characterization. A total of 45 accessions from 35 populations were collected and variation in 9 quantitative and 3 qualitative morphological traits related to fruits was analyzed. Fruit weight showed the highest variation, ranging from 10.23 g in the accession KA-04C to 37.69 g in TN-03. Pulp weight was ranged from 1.71 g in KA-04C to 10.24 g in TN-03. Seed kernel weight was highest in TE-04 (3.87 g) followed by KA-04A (3.21 g) and TE-05A (2.98 g). PCA analysis showed that fruit weight, fruit length, fruit width, pulp weight, rind weight, and endocarp weight were the major traits contributing to the diversity. Cluster analysis resulted in the formation of 4 groups and among them, 2 accessions of clusters 3 and 6 accessions of cluster 4 showed superior fruit characters by having the highest fruit weight, pulp weight, and seed kernel weight. Accessions of these groups could be considered in future domestication programs.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
S. Kalaiselvan ◽  
S. Anuja

The present investigation consisted of 9 lines, 3 testers with their 27 F1 hybrids developed through line x tester mating fashion in randomized block design with three replications. Parents and hybrids differed significantly for gca and sca effects, respectively. Among the parents, maximum gca effect was found in EC 112241 and Aruna for inter node distance, EC 112241 and Arka Anamika for single fruit weight, EC 109454, EC 169344 and Arka Anamika for number of branches per plant, EC 169331 and Arka Anamika for number of fruits per plant, EC 109454 and Aruna for plant height at final harvest. The crosses exhibited maximum positive significant sca effect was observed in EC 112241 x Aruna, EC 109454 x Kashi Kranti and EC 112264 x Aruna were found as good specific combiners for single fruit weight, number of branches per plant and number of fruits per plant respectively. The hybrid EC 112264 x Aruna exhibited maximum significant negative sca effects for inter node distance and plant height at final harvest.


2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Idah Mkwezalamba ◽  
Chimuleke R. Y. Munthali ◽  
Edward Missanjo

Sclerocarya birrea(A. Rich.) Hochst. is a multipurpose fruit tree which is very useful in providing food security and meeting nutritional and economic needs. This study was conducted to assess eighteen provenances ofSclerocarya birreaplanted in Mangochi, Malawi. The trial was assessed for fruit traits at fifteen years of age. There were significant (P<0.001) variations among the provenances in number of fruits, fruit weight, pulp weight, seed weight, fruit length, and diameter. Magunde provenance from Mozambique had the highest mean number of fruits, 2196 ± 200. Mangochi and Moamba provenances from Malawi and Mozambique were the most outstanding in the other parameters measured attaining the mean fruit weight of 20.89 ± 0.25 g and 25.67 ± 0.67 g, pulp weight of 25.70 ± 0.08 g and 21.55 ± 0.83 g, seed weight of 4.81 ± 0.35 g and 4.12 ± 0.18 g, fruit length of 2.61 ± 0.14 cm and 2.33 ± 0.07 cm, and fruit diameter of 2.33 ± 0.15 cm and 1.97 ± 0.08 cm, respectively. There was no significant (P>0.05) correlation between number of fruits and the other fruit traits. However, there were significant (P<0.05) and strong positive relationships between fruit weight and pulp weight (r=0.987) and fruit length and diameter (r=0.775). This suggests that fruit weight can be used indirectly for selection of pulp. Further studies should investigate fruit taste quality of products from the fruits.


1975 ◽  
Vol 55 (4) ◽  
pp. 1013-1016
Author(s):  
D. L. CRAIG

Strawberry cv. Bounty was grown for 2 yr in matted rows with plant spacings of two, four and six plants per 0.093 m2, and noncontrolled spacing. In the 1st fruiting yr, yields were lowest from two plants per 0.093 m2 and yields of other spacings did not differ significantly. Second-year yields from the same plots were lowest from the noncontrolled spacing and did not differ significantly for other spacings. The percentage of the marketable crop weighing 7 g or more per fruit ranged from 84.3% from the noncontrolled stand to 93% for two plants per 0.093 m2. Seasonal mean fruit weight was not affected by treatments in 1973. In 1974, fruit from the noncontrolled spacing was significantly smaller than fruit from the other spacings. The data show that optimum marketable yields of 46,629 kg/ha and a seasonal mean weight per fruit of 12 g can be produced by cv. Bounty from a plant stand of six plants per 0.093 m2.


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