Diallel Analysis for Morphological and Biochemical Traits in Tomato Cultivated under the Influence of Tomato Leaf Curl Virus

Kaushik, Prashant; Dhaliwal, M. S.

doi:10.3390/agronomy8080153

Cited by 33 publications

(38 citation statements)

References 53 publications

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“…The positive and negative heterosis was determined for ten characters. Heterosis over mid-parent has also been reported for fruit traits and yield components in chilli peppers, as well as in other members of the Solanaceae [15,17,30].…”

Section: Discussionmentioning

confidence: 79%

“…Mean squares owing to parents, hybrids and parents versus hybrids were highly significant for all traits (Table 1). Similarly, the pooled analysis of variance over two seasons for morphological (15) and fruit biochemical (5) traits showed that mean squares due to general combining ability (GCA) and specific combining ability (SCA) were highly significant for all studied traits (p ≤ 0.01) ( Table 2). The results also indicate the involvement of both additive and non-additive genetic variance in governing the expression of the studied traits.…”

Section: Analysis Of Variance For the Experimental Designmentioning

confidence: 90%

“…Moreover, the genetics of chilli pepper are not well studied as compared to other members of Solanaceae [15][16][17]. Therefore, many concentrated efforts are necessary to develop improved quality hybrids with high yield.…”

Section: Introductionmentioning

confidence: 99%

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Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Aiswarya

Vijeth

Sreelathakumary

et al. 2019

Plants

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Chilli pepper is commercially cultivated as a spice and is also used for the extraction of a colouring agent. Here, we performed a diallel genetic study involving five chilli pepper varieties. Parents and their hybrid were evaluated for fifteen morphological and five biochemical traits over two crop seasons under open field conditions. Variation was recorded for all of the studied traits. Similarly, significant values for general combining ability (GCA) and specific combining ability (SCA) variance were obtained for all of the traits. The ratio of σ 2 SCA/σ 2 GCA indicates that non-additive gene effects were predominant for all the studied traits except for fruits plant −1 . Based on SCA effects, cross combinations P2 × P5, and P4 × P5 were determined excellent for flesh thickness, yield components and vitamin C. These hybrids are recommended for multilocation testing to assess their suitability for commercial cultivation. Overall, this work presents useful information regarding the genetics of important morphological and biochemical traits in chilli pepper.

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Section: Discussionmentioning

confidence: 79%

Section: Analysis Of Variance For the Experimental Designmentioning

confidence: 90%

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Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Aiswarya

Vijeth

Sreelathakumary

et al. 2019

Plants

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“…Earlier studies pointed out the effect of cytoplasm sources on different traits and it was concluded that the cytoplasmic genome affects qualitative and quantitative traits [44–46]. SCA effects are more important for cross-pollinated plants, whereas CGA effects are more important for self-pollinated plants [47]. Being a cross-pollinated plant sunflower showed significantly higher SCA values than corresponding GCA values for most of the 12 descriptors.…”

Section: Discussionmentioning

confidence: 99%

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

Tyagi

Kaur

Kaushik³

et al. 2018

Preprint

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Sunflower is sensitive to drought and its hybrids have a limited cytoplasmic diversity. The wild 10 cytoplasmic sources of sunflower are not well exploited to their potential for drought tolerance and hybrid 11 development. In this respect, we carried out a Line × Tester based genetic study using 19 sunflower 12 genotypes representing, 13 cytoplasmic male sterile (CMS) lines from wild and conventional sources, 2 13 maintainer lines, and 4 restorer lines. The CMS and maintainer lines were crossed with restorer lines to 14 develop sixty one-way F1 hybrids. The parents and their hybrids were evaluated under two water 15 regimes viz., normal irrigated and water stress. A total of twelve important plant descriptors were studied 16 over a period of two years. The significant differences were observed between parents and hybrids in both 17 water regimes. Hybrids were higher in average values for all the descriptors than parents. The role of 18 female parent was more prominent in the expression of traits in hybrids as compared to male parents. The 19CMS sources varied significantly regarding seed yield per plant and other physiological traits. Proline 20 content was three times higher in parents and their hybrids under water stress, and it was not correlated 21 with any other descriptor. Accession CMS-PKU-2A was identified as the best general combiner for leaf 22 area and specific leaf weight. Whereas, CMS-234A was the best general combiner for biological yield and 23 photosynthetic efficiency under both the conditions. The cross combinations CMS-ARG-2A × RCR-8297, 24 CMS-234A × P124R, and CMS-38A × P124R were found significant for biological yield, seed yield and oil 25 content under both environments. Overall, this study provides useful information about the cytoplasmic 26 effects on important sunflower traits and drought stress tolerance when used in the different 27 combinations. 28 29 30 1. Introduction 31 Sunflower (Helianthus annuus L.) is a commercially important oilseed crop, and its oil is 32 comparable to virgin oil olive for health promoting benefits [1,2]. Botanically, sunflower is a cross-pollinated 33 and self-incompatible plant [3]. Moreover, it out crosses freely with its wild relatives [4]. During the past few 34 decades, the area and production of sunflower have increased because of its day length neutrality, a wider 35 adaptability, and responsiveness to added inputs [5]. Similarly, these attributes of sunflower promote 36 sustainable crop production system when sunflower is used with other crops in crop rotation [6]. The central 37 component of sunflower breeding is the development of hybrids through cytoplasmic male sterility (CMS) 38 system [7]. CMS is the absence of fertile pollen in the plant hence eliminates the need for manual 39 emasculation for the development of a successful cross combination. CMS based hybrids system has been 40 extensively distributed throughout the plant kingdom and well exploited for achieving yield targets, disease 41 resistance, and drought tolerance [8-10]. 42CMS syst...

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“…Tomato crop has different types of male sterility identified, but presently commercial hybrid seed production in tomato and brinjal possible with manual emasculation and hand pollination and it is economically viable and dominates in the seed industry. Though, the availability of different sterility methods can be used to avoid selfing and optimise crossing resulted in reducing the cost of hybrid seed production [45].…”

Section: Advances In the Understanding Of Molecular Mechanisms Underlmentioning

confidence: 99%

Directing for Higher Seed Production in Vegetables

Brar¹,

Saini²,

Kaushik³

et al. 2020

Agronomy - Climate Change and Food Security

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Vegetables are essential for human health and well-being. For sustaining an excellent production of vegetable crops, the seed is a primary input. Moreover, good quality seed is an important requirement for the vegetable industry, and there is a huge demand that has been expanding, considering the fact that seed multiplication is economically pertinent for vegetable cultivars to contend commercially. But the healthy seed production is usually a sumptuous trait and tormented by agricultural tactics, genetics as well as by the environmental factors. Features like seed output of the vegetables, sizeable genetic variation, the prerequisite for advancement and acceptance of a good quality vegetable seed. Here different mechanisms for seed production in vegetable crops has been presented, also vital areas and factors influencing seed production, and eventually discourses regarding the opportunity of plant breeding to sustainably make improvements to vegetable seed production.Agronomy -Climate Change and Food Security 2 flowers [4]. There are two main types of pollination, namely, self and cross-pollination. Self-pollination refers to the deposition of pollen from the anther on the stigma located on the same plant (geitonogamy). It is the closest form of inbreeding which leads to homozygosity. Species having this type of pollination develop homozygous balance and do not exhibit significant inbreeding depression [5].Whereas the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual is called cross-pollination. It is the form of outbreeding which leads to heterozygosity. Outbreeder species develop heterozygous balance and exhibit significant inbreeding depression on selfing. In addition to these two types of pollination, there is one a different kind of pollination, often called cross-pollination, where cross-pollination often exceeds 5% and may reach 30%. Various mechanisms such as bisexuality, homogamy, cleistogamy and position of anthers promote self-pollination, whereas other mechanisms such as dicliny (namely monoecy and dioecy), dichogamy, heterostyly, herkogamy, selfincompatibility (namely sporophytic and gametophytic) and male sterility promote cross-pollination [6].Nearly one-third of the current global population is suffering from some form of malnutrition. Moreover, with a constant rise in the world population the food demand tends to increase up to 60% [7]. Vegetables being shorter duration crops can play a crucial role in providing more food per unit of cultivated area [8]. Similarly, climate change is a result of human activities primarily related to the emission of greenhouse gases. It means that there must be a focus on vegetable production and lowering the per capita emissions of greenhouse gases [9]. Vegetables are sensitive to temperature fluctuations, and environmental stresses have also been found to affect the nutrient composition of vegetables [10].Monoecious, that is, cucurbits have both male and female flowers on different branches of the same pla...

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Diallel Analysis for Morphological and Biochemical Traits in Tomato Cultivated under the Influence of Tomato Leaf Curl Virus

Cited by 33 publications

References 53 publications

Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Diallel Analysis of Chilli Pepper (Capsicum annuum L.) Genotypes for Morphological and Fruit Biochemical Traits

Characterization for Drought Tolerance and Physiological Efficiency in Novel Cytoplasmic Male Sterile Sources of Sunflower (Helianthus annuus L.)

Directing for Higher Seed Production in Vegetables

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