F1 seeds

In recent years, studies have been carried on the selection and breeding of melon to reduce its production cost. The F1 seeds of this species are usually created by parental lines. Notably, the parental lines are separated from each other to secure the breeding materials.

8p vicaptainmarvel 21-04-2023 4 2   Download

The mitochondrial genomes of higher plants vary remarkably in size, structure and sequence content, as demonstrated by the accumulation and activity of repetitive DNA sequences. Incompatibility between mitochondrial genome and nuclear genome leads to non-functional male reproductive organs and results in cytoplasmic male sterility (CMS). CMS has been used to produce F1 hybrid seeds in a variety of plant species.

15p vitzuyu2711 29-09-2021 12 1   Download

Cytoplasmic male sterility (CMS) has been widely used for commercial F1 hybrid seeds production. CMS is primarily caused by chimeric genes in mitochondrial genomes. However, which specific stages of anther development in cabbage are affected by the chimeric genes remain unclear.

15p vitzuyu2711 29-09-2021 16 1   Download

Cytoplasmic male sterility (CMS) and its restoration of fertility (Rf) system is an important mechanism to produce F1 hybrid seeds. Understanding the interaction that controls restoration at a molecular level will benefit plant breeders. The CMS is caused by the interaction between mitochondrial and nuclear genes, with the CMS phenotype failing to produce functional anthers, pollen, or male gametes.

17p viansan2711 30-07-2021 14 1   Download

The present investigation was carried out to study the mean performance, heterosis, combining ability and gene action for different seed traits viz., seed germination, seed vigour index-I, seed vigour index-II and fruit yield in 15 F1 crosses, developed by crossing 6 genotypes during the year 2015.

11p trinhthamhodang1218 26-02-2021 11 1   Download

A field experiment was conducted at Instructional-cum-Research (ICR) farm, Assam Agricultural University, Jorhat during 2016. The experiment was laid out in split-plot design with three replications. The treatments consisted of three different tillage practices in main plots viz.

5p cothumenhmong9 18-01-2021 23 2   Download

Brassica species are major oilseed crops which are an increasingly important part of the human diet worldwide. In present investigation 11 varieties and their 55 F1’s were characterized for storage seed protein profiling using sodium dodecyl sulphate – polyacryl amide gel electrophoresis (SDS - PAGE). The electrophoresis of the proteins revealed protein bands in the range of 80kD to less than 14 kD molecular weight (MW). Out of 15 bands 14 bands were more or less monomorphic and only single band was polymorphic.

8p nguathienthan8 20-10-2020 11 2   Download

The phenomenon of heterosis has provided the most important genetic tools in improving yield of crop plants. Identification of specific parental combination capable of producing the highest level of heterotic effects in F1 has immense value for commercial exploitation of heterosis.

9p nguathienthan8 20-10-2020 19 2   Download

Experiments were carried out to determine the insecticidal activity of Aegle marmelos Correa against Callosobruchus chinensis L. in the laboratory. Plants were extracted with petroleum ether, methanol, ethanol and water by using Soxhlet apparatus and tested against adult of C. chinensis. Plant extracts were showed insecticidal activity by affecting through mortality, oviposition deterrence and inhibition of F1 adult emergence.

9p nguathienthan8 20-10-2020 8 2   Download

Generation mean analysis study in cowpea was undertaken to estimate the gene action operating in the inheritance of yield and its components. Six basic generations viz., P1, P2, F1, F2, BC1 and BC2 of five crosses, namely Pant lobia-1 x BRDCP-11 (cross I), Pant lobia-2 x GC-3 (cross II), Waghi local x W-203-1 (cross III), KM-5 x GC-3 (cross IV) and GC-3 x CDP-107 (cross V) were studied. Scaling test was applied to test the adequacy of additive-dominance model for the traits under investigation.

10p chauchaungayxua8 03-10-2020 15 2   Download

The present investigation was conducted at College Farm, N. M. College of Agriculture, Navsari Agricultural University, Navsari during kharif - 2016 with a view to study the heterosis and inbreeding depression in five crosses (each having P1, P2, F1, F2, BC1 and BC2 generations) of cow pea through a compact family block design with three replications.

9p trinhthamhodang1215 23-09-2020 9 2   Download

Pre-requisite for any plant biotechnological approach is development of an efficient plant regeneration system in that crop. In this regard the in vitro regeneration was achieved by using cotyledon explants from aseptically raised seedlings of popular Capsicum F1 hybrids Bharat and Indra. Seeds of both hybrids were exposed to different treatments for proper germination, were decontaminated and sown in vitro on half-strength MS medium.

13p kequaidan7 01-09-2020 11 2   Download

The objective this study was to effect of gene effects for some agronomical traits (plant height, number of effective tillers per plant, number of spikelet per spike, number of seeds per plant, seed yield and biological yield) of Cross I CG1608 (HI 1544 x GW 2013-513) and Cross II CG 1639 (RAJ 4270 x GW 366) The experimental material comprising of six generations ( P1 , P2 , F1 , F2 , BC1 and BC2 ) of wheat crosses was planted during rabi 2018-19 in randomized block design of two replication under irrigated condition at All India Co-ordinated Wheat and Barley Improvement Project at B.T.

10p nguaconbaynhay7 15-08-2020 15 1   Download

Interspecific hybridization was made between mungbean yellow mosaic virus (MYMV) susceptible greengram variety CO 5 with MYMV resistant wild Vigna sp. Crossed seeds were raised in field condition for testing the MYMV incidence. F1 showed dominant resistance reaction against MYMV disease incidence.

8p nguaconbaynhay7 15-08-2020 9 1   Download

Thirty interspecific crosses (including reciprocals) involving three genotypes/varieties of greengram (Vigna radiate (L) Wilczek) cv. HUM 1 HUM 2 & HUM 8 and five genotypes/varieties of blackgram (Vigna mungo (L.) Hepper) cv. T 9, Pant U 19, PDU 1, BHUU 1 & BHUU 91-346-1 were attempted. Nine out of 30 crosses were successful only when greengram was used as seed parents. The crossability ranged from 0.0 to 61.0 per cent. Germination, survival and pod bearing habit of the F1s hybrids were much better in Kharif season as compared to spring/summer season.

6p caygaocaolon6 30-07-2020 11 2   Download

A study was conducted in castor to estimate the magnitude of heterosis for yield and its eleven yield components. 32 F1 hybrids generated line × tester mating design developed by Kempthorne (1957). These F1S along with 12 parents were evaluated in a randomized block design with three replications at Agricultural Research Station at sansoli, Anand, Gujarat (India).

5p angicungduoc6 20-07-2020 21 2   Download

Tomato leaf curl disease caused by tomato leaf curl virus (ToLCV) is a major limiting factor in tomato cultivation in Jammu region of Jammu and Kashmir. Screening of different germplasm collected from different sources against the disease showed that out of fifteen germplasm, Mahaveer and Avinash-2 were found resistant, Samrudhi F1 and Namdhari 82535 were found moderately resistant while eleven germplasm viz. Heem Sohna, Sonali, Rupali, NS 816, NS 812, Pusa Ruby, Indus 1030, Arti, DVRT-2, Hybrid no. 15 and local showed susceptible reaction.

7p trinhthamhodang6 09-07-2020 11 1   Download

Hayman diallel analysis was performed excluding reciprocal in Indian mustard, the experimental material consisted of morphological diverse but genetically homozygous genotypes/varieties and their 45 direct crosses i.e., the F1 populations. The traits days to flowering, days to maturity, plant height, number of siliquae per plant, 1000-seed weight, harvest index, and linolenic acid explored additive type of gene effects.

11p nguaconbaynhay6 24-06-2020 11 1   Download

The objective of study was to develop high yielding (>20quintals/hectare) and high ginning out turn per cent (>35) cultures/ varieties. Out of 19 advance generation, three advance generation individual populations RS875xSA524 P12, F1861xSA668 P15, RS875xSA524 P4 had significantly higher seed cotton yield in comparison to both the check varieties H1226 (1717.37±292.3) and (F1861 1751.09 ±292.3) and possessed GOT% of 40.6, 38.5 and 39.0 and lint yield 935.6, 848.0 and772.4kg/ hectare, respectively.

9p kethamoi5 03-06-2020 12 0   Download

The present study was undertaken to confirm the hybridity of Brassica juncea L. F1 plants based on the amplification pattern of SSR markers. The complementary banding pattern of the male and female parents helped to confirm the genuineness of F1 plants developed. The seeds of two genotypes of Brassica juncea, RSPR-01 used as female parent and DonskajaIV used as male parent were raised in pots under field conditions and crossed to develop F1 seeds. Out of 20 random SSR primers used for the screening of parental genotypes for polymorphism, 5 primers were found polymorphic.

7p trinhthamhodang1213 30-05-2020 7 0   Download