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Genetic Variability and Trait Relationship in Cherry Tomato (solanum Lycopersicum L. Var. Cerasiforme
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ismail Rafii Málek |
| Copyright Year | 2012 |
| Abstract | Nine traits of 11 cherry tomato (Solanum lycopersicum L.) var. cerasiforme (Dunal) A. Gray) inbred lines exhibited a wide range of genetic variability. High genoand phenotypic coefficients of variation were obtained for individual fruit weight (68.16 and 74.23%, respectively) followed by number of fruits/plant (58.8 and 68.34%, respectively). High estimates of heritability, genetic advance and genotypic coefficient of variation for the traits of individual fruit weight, number of fruits and clusters/plant were controlled by additive gene action indicating the possibility of selection to improve these characters. Fruit yield/plant showed low heritability along with low genetic advance and did not show significant and positive correlation with the remaining characters. It indicates that improvement of high yield through selection is difficult, rather hybridization can be effective for improving the fruit yield/plant. Among the lines, CH154 produced the highest number of fruits/plant (291) and highest fruit yield (1.89 kg/plant and 63.4 t/ha) and can be selected for cultivation under Bangladesh condition. Introduction Cherry tomato (Solanum lycopersicum L. var. cerasiforme (Dunal) A. gray) is a cultivated variety of tomato. The variety is generally considered to be similar but not identical to the wild relatives of the domestic tomato. It has become more popular all over the world because of a good source of vitamins A and C, solids content, good taste and fruit set even at high temperature (Prema et al. 2011b). Its fruits are consumed more as a fruit rather than as a vegetable. Cherry tomato often called 'salad tomato' and is the probable ancestor of the cultivated tomato. Though cherry tomato became popular as a cash crop in some Asian countries is still new in Bangladesh. It is, therefore, essential to assess the quantum of genetic variability, nature of character association with respect to different characters, which would help plant breeders in planning a successful breeding programme. Genetic parameters like genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), heritability and genetic advance are useful biometrical tools for determination of genetic variability. The yield is a complex character, quantitative in nature and an integrated function of a number of component traits. Therefore, selection for yield per se may not be much rewarding unless other yield attributing traits are taken into consideration. Correlation study provides a measure of association between characters and helps to identify important characters to be considered while making selection. Knowledge of correlation between yield and other characters is helpful in selecting suitable plant type. In the agro-ecological perspective of Bangladesh, information regarding variability on cherry tomato needs to be studied for a successful breeding programme to breed new varieties. Therefore, *Author for correspondence: . Department of Horticulture, Sylhet Agricultural University, Sylhet-3100, Bangladesh. Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.banglajol.info/index.php/BJB/article/download/13443/9681 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
