Genetic Variability among Nut Yield Traits and Selection in Cashew (<i>Anacardium occidentale</i> L.)

Faluyi, M. A.

doi:10.1111/j.1439-0523.1987.tb01125.x

Cited by 6 publications

(6 citation statements)

References 2 publications

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“…The results agree with Faluyi (1987), who reported GCV over 50 per cent of the PCV for eight nut traits. This implies that these characters had less sensitivity to environment and variation observed in these characters has a genetic basis.…”

Section: Variability Parameterssupporting

confidence: 91%

“…Besides, these characters showed moderate (sex ratio) to high broad-sense heritability coupled with high GAM indicating the involvement of additive gene action for their expression and useful for selection (as per the classification given by Johnson et al, 1955). Similar results were obtained by Faluyi (1987) and Lenka et al (2001) for nut yield tree -1 and Reddy et al (2002) for nut weight. However, Sena et al (1994) reported high values of GCV, broad-sense heritability and GAM for sex ratio.…”

Section: Variability Parameterssupporting

confidence: 70%

“…In this context, the study of genetic variability parameters is indispensable for planning crop breeding activities. A few reports are available on the estimation of genetic variability parameters (Faluyi, 1987;Sena et al, 1994;Lenka et al, 2001;Reddy et al, 2002) and heterosis in cashew (Cavalcanti et al, 2000;Cavalcanti et al, 2003;Sankaranarayanan et al, 2015;Kabita et al, 2016). Therefore, an investigation on hybrid vigour and variability for key growth characters and yield in cashew was carried out.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid vigour and variability for key growth characters and yield in cashew (Anacardium occidentale L.)

Eradasappa¹,

Adiga²,

Mohana³

2020

JPC

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Hybrid vigour and assessment of genetic variability for important growth characters and yield traits in cashew were studied in eight cashew hybrids.The analysis of variance for the phenotypic data for 12 characters revealed significant variation among the genotypes except for tree spread, flowering laterals per m2, non-flowering laterals per m2 and sex ratio.The highest nut weight was observed in H-125 (12.07 g) whereas the lowest was in H-2452 (5.08 g).The maximum nut yield was noticed in hybrid H-126 with 5.96 kg tree-1 while NRCC Selection-2 recorded lowest with 0.53 kg tree-1. The standard heterosis over two checks, bold nut check (NRCC Sel-2) and high yielding check (Bhaskara) and variability parameters such as genotypic coefficient of variation, phenotypic coefficient of variation, broad-sense heritability and genetic advance were estimated. For nut weight, standard heterosis over bold nut check varied from -34.54 to 55.54 per cent and six out of eight hybrids viz., H-43, H-66, H-68, H-125, H-126 and H-2473 showed significant and positive standard heterosis. Standard heterosis over the high yielding check, varied from -38.93 to 300 per cent and it was significant and positive in two hybrids viz., H-126 and H-125 with 300 per cent and 214.09 per cent, respectively.The hybrid vigour was not significant for trunk girth, tree height, tree spread, number of flowering laterals per m2 and sex ratio. Notably, five hybrids presented more than 20 per cent standard heterosis for nut weight over bold nut check which may serve as a useful source of breeding material. Two hybrids viz., H-125 and H-126 showed good hybrid vigour for nut weight and yield over two checks and thus have been inducted into multi-location trials and also under consideration for release.

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Section: Variability Parameterssupporting

confidence: 91%

Section: Variability Parameterssupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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Hybrid vigour and variability for key growth characters and yield in cashew (Anacardium occidentale L.)

Eradasappa¹,

Adiga²,

Mohana³

2020

JPC

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“…1). Selections based on nut weight is an effective selection criterion for both quantitative and qualitative yield characters (Faluyi, 1987). In the present investigation, high nut (NWT) weight (>7 g) was observed in 65 per cent of the accessions.…”

Section: Resultsmentioning

confidence: 51%

Phenotypic diversity and clustering of germplasm accessions of cashew for utilization and conservation

2021

EJPB

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To promote the better utilization of genetic resources of cashew, 91 accessions maintained at Cashew Research Station, Madakkathara were assessed for 38 phenotypic traits. Frequencies of the phenotypic classes of each character were calculated. The Shannon diversity index (H ') was used to estimate the magnitude of diversity. Polymorphism was high for tree habit (0.96), tree height (0.89), branching pattern (0.89), colour (0.80), ridges (0.93), apex (0.95), cavity (0.90) and weight (0.84) of cashew apple, attachment of nut to apple (0.85), flanks of nut (0.95) and cotyledonary grooves (0.99). The cluster analysis using the squared Euclidean distance method classified the accessions into 13 clusters at a 55 per cent similarity level. More than 50 per cent of the accessions were high yielding with moderate quality kernels. Grouping of the genotypes into agronomic groups revealed the existence of highly prolific accessions with high quality kernels that can be exploited for crop improvement programmes.

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“…The undertaken germplasms were WBDC -4, Kottakerala -2/97, Dicherla -2/9, Vetore -56 and Ullal-2. The study was continued as for four consecutive days, three times per flowering season during five flowering season [one day before, on the day of flower opening, one day and two days after flowering (Allard, 1960;Bailey, 1958;Shivanandam et al, 1986;Faluyi, 1987).…”

Section: Methodsmentioning

confidence: 99%

Stigma receptivity in Cashew nut (Anacardium occidentale L.)

Mandal¹,

Road²

2020

IJERR

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The cashew is widely and commercially cultivated throughout the nation for its nut. Cashew is a polygamo – monoecious plant with both male and bisexual flowers developing in same inflorescence. Experimental study was conducted at Kesiary Cashew Plantation Sector, Medinipur as per the guidelines Regional Research Station, Jhargram and National Research Centre of Cashew, Karnataka (2014 – 2018). Changes in stigma receptivity were studied by over 100 panicles chosen at random taken from the commercially cultivated germplasms (WBDC – 4, Kottakerala – 2/97, Dicherla – 2/9, Vetore – 56 and Ullal – 2). The study was continued as for one day before, on the day of flower opening, one day & two days after flowering. It indicates that one day prior to opening & two days after of flowering, stigma receptivity was maximum in the plants of Vetore – 56. But on the day & one day after of flowering it was highest in Dicherla – 2/9. The optimum period of receptivity was at 12 noon on the day of anthesis.

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Genetic Variability among Nut Yield Traits and Selection in Cashew (Anacardium occidentale L.)

Cited by 6 publications

References 2 publications

Hybrid vigour and variability for key growth characters and yield in cashew (Anacardium occidentale L.)

Hybrid vigour and variability for key growth characters and yield in cashew (Anacardium occidentale L.)

Phenotypic diversity and clustering of germplasm accessions of cashew for utilization and conservation

Stigma receptivity in Cashew nut (Anacardium occidentale L.)

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