DUS characterization of rice (<i>Oryza sativa</i> L.) landraces of wayanad, Kerala

Manjunatha, Girigowda; Elsy, C. R.; Rajendran, P.; Joseph, Jiji; Francies, Rose Mary; Krishnan, S.

doi:10.5958/0975-928x.2018.00076.5

Cited by 9 publications

(7 citation statements)

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“…Out of the studied germplasm, 23% showed brown furrows on straw background for lemma and palea color which is followed by gold and gold furrows on straw background (16%), straw (19%), brown (13%), purple (10%), brown spots on straw (6%), reddish to light purple (6%) and black (6%). So, there exist wide variations in the studied germplasm for lemma and palea color which was also found by other researchers in their studies (73,74). In case of sterile lemma color, 45% germplasm had straw sterile lemma color, 32% had gold color, 19% had red color and 3% had purple color which was matched with the earlier report (62) but dissimilar to the results reported (72).…”

Section: Pigmentationsupporting

confidence: 71%

Morphological variability and genetic diversity of Aman rice germplasm of Bangladesh cultivated in Mymensingh region

et al. 2021

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Thirty-one Aman rice germplasm were evaluated to assess their morphological variability and genetic diversity considering ten quantitative and thirty one qualitative traits at the field experimental plot of Bangladesh Institute of Nuclear Agriculture, Mymensingh, following randomized complete block design. The germplasm showed significant differences for all the studied traits. The highest grain yield/plant was recorded in Sentu-16 whereas the lowest was found in Gaindha. The genotypic coefficient of variation (GCV) was lower than those of the corresponding phenotypic coefficient of variation (PCV) for all the traits. High PCV and GCV along with heritability, genetic advance (GA) and GA in percentage of mean were recorded for number of filled grains/panicle and number of unfilled grains/panicle. Grain yield/plant had positively significant correlation with plant height, number of total tillers/hill, number of effective tillers/hill, number of filled grains/panicle and thousand grain weight. Path co-efficient analysis suggested that grain yield/plant had positive direct effect in association with days to fifty percent flowering, number of effective tillers/hill, panicle length, number of filled grains/panicle and thousand grain weight. Principal component analysis revealed that the first three components accounted for 79.57% of cumulative variance. Cluster analyses were revealed that the studied rice germplasm organized into five clusters based on D2 values where maximum inter-cluster distance was observed between cluster II and V. Qualitative characterization by distinctness, uniformity and stability test revealed that a wide range of variation was observed among the genotypes. Therefore, this study would be useful for breeders to choose and identify the revival and preservation of beneficial genes for crop improvement.

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Section: Pigmentationsupporting

confidence: 71%

Morphological variability and genetic diversity of Aman rice germplasm of Bangladesh cultivated in Mymensingh region

et al. 2021

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“…Kumar et al (2015) also reported greater variability for many of these traits in maize landraces collected from the northwest Himalayan region. Likewise, in paddy landraces, the most variable agro-morphological traits were DF, LL, NT, PH, DM, and 100-SW. Manjunatha et al (2018) and Manohara et al (2018) had also shown similar phenotypic diversity among rice landraces. Moreover, these findings were also in concordance with a recent study on Turkish rice landraces (Konak et al, 2021).…”

Section: Discussionmentioning

confidence: 73%

Agro-Morphological Characterization and Nutritional Profiling of Traditional Himalayan Crop Landraces for Their Promotion Toward Mainstream Agriculture

Malhotra

Sharma²,

Sood³

et al. 2022

Front. Plant Sci.

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The northwest Indian Himalayas are often regarded as a biological hotspot for the presence of rich agro-biodiversity harboring locally adapted traditional crop landraces facing utter neglect owing to modern agricultural systems promoting high-yielding varieties. Addressing this challenge requires extricating the potential of such cultivars in terms of agro-morphological and nutritional attributes. In this study, 29 traditional crop landraces of maize (11), paddy (07), finger millet (03), buckwheat (05), and naked barley (03) were characterized and evaluated for target traits of interest. In maize, Chitkanu emerged as an early maturing landrace (107 days) with high concentrations of zinc (Zn), iron (Fe), and potassium (K), and Safed makki showed the highest 100-seed weight (28.20 g). Similarly, Bamkua dhan exhibited high concentrations of K and phosphorus (P), and Lamgudi dhan showed a high protein content (14.86 g/100 g) among paddy landraces. Ogla-I and Phapra-I showed high contents of protein (14.80 g/100 g) and flavonoids (20.50 mg/g) among buckwheat landraces, respectively, followed by Nei-I, which exhibited the highest protein content (15.66 g/100 g) among naked barley landraces. Most of the target traits varied significantly (p < 0.05) among evaluated samples, except those associated with finger millet landraces. The grouping pattern obtained by principal component analysis (PCA) and multidimensional scaling (MDS) was congruent with the geographical relationship among the crop landraces. This study led to the identification of elite crop landraces having useful variations that could be exploited in plant breeding programs and biofortification strategies for future crop improvement. Our endeavor would aid in conserving the depleting Himalayan agro-biodiversity and promoting versatile traditional crops toward mainstream agriculture vis-à-vis future nutritional security.

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“…The genotypes namely vellaigundu samba, ariyan red, valsamba and karungan exhibited the presence of awns which are distributed in whole length of the panicle. Manjunatha et al 2018) also reported the absence of awns in most of the genotypes taken for the study whereas Chakravorty and Ghosh (2012) reported panicle distribution of awns at tip only in most of the germplasm studied. For the character culm attitude, 30.93% landraces were erect type, 28.87% semi erect type, 37.11% open type, 3.09% were spreading type.…”

Section: Resultsmentioning

confidence: 95%

Study of morphological diversity of rice landraces (Oryza sativa.L)

Priyanga

Kumaresan²,

Amudha³

et al. 2020

EJPB

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An investigation was carried out to characterize 97 rice (Oryza sativa L.) land races for 24 different morphological traits using DUS (Distinctiveness, Uniformity, Stability) characters. A total of three characters viz., leaf auricles, leaf ligules and leaf shape of ligule were found to be monomorphic. The characters namely leaf anthocyanin colouration, leaf sheath anthocyanin colouration, panicle awns, panicle distribution of awns and leaf pubescence of blade surface were recorded as dimorphic. Seven traits viz., coleoptile colour, leaf intensity of green colour, ligule colour, leaf anthocyanin colouration of auricles, panicle exertion, leaf length of blade and leaf width of blade were of trimorphic. Five traits namely basal leaf sheath colour, culm attitude, flag leaf attitude of blade (early and late observation), panicle curvature of main axis were recorded four states of expression. The traits viz., spikelet colour of stigma, stem length, days to 50% flowering and time to maturity were showed five states of expression. The DUS characterization for these characters will be useful for rice breeders to restore the superior genes and use it in crop improvement programmes. Presence of uniform purple colour in whole plant incluing ligule and auricles was observed in purple puttu and chitansamba and can be used as morphological markers. The land races namely Ayyan samba and red sirumani were found to be the early maturity types. The short stem length and erect culms were observed in senthooram and seevansamba and these genotypes withstand lodging. Hence, these land races would be used as donors for the development of short duration and lodging resistance respectively in rice improvement programme.

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DUS characterization of rice (Oryza sativa L.) landraces of wayanad, Kerala

Cited by 9 publications

References 1 publication

Morphological variability and genetic diversity of Aman rice germplasm of Bangladesh cultivated in Mymensingh region

Morphological variability and genetic diversity of Aman rice germplasm of Bangladesh cultivated in Mymensingh region

Agro-Morphological Characterization and Nutritional Profiling of Traditional Himalayan Crop Landraces for Their Promotion Toward Mainstream Agriculture

Study of morphological diversity of rice landraces (Oryza sativa.L)

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