Grain Yield in Pearl Millet in Relation to Source Size and Proximity to Sink

Joshi, Ankush; Pandya, J.N.; Buhecha, K. V.; Dave, H. R.; Pethani, K. V.; Dangaria, C. J.

doi:10.1023/a:1025841320024

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…Total biomass yield (BY, t.ha −1 ), grain yield (GY, t.ha −1 ), 1000 seed weight in grams (Test weight, TW) and grain-to-stover ratio (GS, %) were calculated and recorded from NN and LN fields. Haussmann et al [ 46 ] described that the upper six leaves are a good source for measuring the greenness of leaves since they are photosynthetically active at anthesis and contribute nutrients to the grain [ 47 ]. In this study, chlorophyll contents were measured in the 3 rd leaf from the top using a portable chlorophyll meter model SPAD-502 (Minolta, Japan).…”

Section: Methodsmentioning

confidence: 99%

Mapping QTLs and association of differentially expressed gene transcripts for multiple agronomic traits under different nitrogen levels in sorghum

et al. 2016

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BackgroundSorghum is an important C4 crop which relies on applied Nitrogen fertilizers (N) for optimal yields, of which substantial amounts are lost into the atmosphere. Understanding the genetic variation of sorghum in response to limited nitrogen supply is important for elucidating the underlying genetic mechanisms of nitrogen utilization.ResultsA bi-parental mapping population consisting of 131 recombinant inbred lines (RILs) was used to map quantitative trait loci (QTLs) influencing different agronomic traits evaluated under normal N (100 kg.ha−1 fertilizer) and low N (0 kg.ha−1 fertilizer) conditions. A linkage map spanning 1614 cM was developed using 642 polymorphic single nucleotide polymorphisms (SNPs) detected in the population using Genotyping-By-Sequencing (GBS) technology. Composite interval mapping detected a total of 38 QTLs for 11 agronomic traits tested under different nitrogen levels. The phenotypic variation explained by individual QTL ranged from 6.2 to 50.8 %. Illumina RNA sequencing data generated on seedling root tissues revealed 726 differentially expressed gene (DEG) transcripts between parents, of which 108 were mapped close to the QTL regions.ConclusionsCo-localized regions affecting multiple traits were detected on chromosomes 1, 5, 6, 7 and 9. These potentially pleiotropic regions were coincident with the genomic regions of cloned QTLs, including genes associated with flowering time, Ma3 on chromosome 1 and Ma1 on chromosome 6, gene associated with plant height, Dw2 on chromosome 6. In these regions, RNA sequencing data showed differential expression of transcripts related to nitrogen metabolism (Ferredoxin-nitrate reductase), glycolysis (Phosphofructo-2-kinase), seed storage proteins, plant hormone metabolism and membrane transport. The differentially expressed transcripts underlying the pleiotropic QTL regions could be potential targets for improving sorghum performance under limited N fertilizer through marker assisted selection.Electronic supplementary materialThe online version of this article (doi:10.1186/s12870-015-0696-x) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Mapping QTLs and association of differentially expressed gene transcripts for multiple agronomic traits under different nitrogen levels in sorghum

et al. 2016

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“…It is reported that pulpy fruits like mango, guava, papaya, fig, jackfruit etc. can be utilized for preparation of toffee (Shastri et al 1979;Singh 1988;Joshi et al 1989;Domale et al 2008). Fruit toffees naturally are very nutritious as they possess most of the constituents of fruit from which they are prepared (Jain et al 1958).…”

Section: Introductionmentioning

confidence: 99%

Studies on preparation of mixed fruit toffee from Fig and Guava fruits

Kohinkar¹,

Chavan²,

Pawar³

et al. 2012

J Food Sci Technol

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. The storage studies of toffees packed in 200 gauge polyethylene bags indicated that the TSS, reducing and total sugars increased with the advancement of storage period, while moisture and acidity content decreased. The rate of reactions was relatively higher at ambient temperature than refrigerated temperature. Though the sensory quality of toffees also decreased at faster rate during 180 days storage period at ambient condition than the refrigerated condition yet the toffees were found to be acceptable even after 180 days at both the conditions.

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“…In contrast, reducing fruit load in tomato caused increased photoassimilate availability in the plant and increased growth rates in all remaining plant organs, indicating a source limitation (Baldet et al 2006). In pearl millet a correlation exists for leaf area and seed yield (Joshi et al 2003), consistent with limiting source capacity, while in wheat, sink capacity of grains limits assimilate supply in certain cultivars under optimal growing conditions (Wang et al 1997).…”

Section: Introductionmentioning

confidence: 89%

Evidence against sink limitation by the sucrose‐to‐starch route in potato plants expressing fructosyltransferases

Zuther¹,

Hoermiller²,

Heyer³

2011

Physiologia Plantarum

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To investigate whether the route from sucrose to starch limits sink strength of potato tubers, we established an additional storage carbohydrate pool and analyzed allocation of imported assimilates to the different pools. Tuber specific expression of the fructan biosynthetic enzymes of globe artichoke resulted in accumulation of fructans to about 5% of the starch level, but did not increase tuber dry weight per plant. While partial repression of starch synthesis caused yield reduction in wild-type plants, it stimulated fructan accumulation, and yield losses were ameliorated in tubers expressing fructosyltransferases. However, a nearly complete block of the starch pathway by inhibition of sucrose synthase could not be compensated by the fructan pathway. Although fructan concentrations rose, yield reduction was even enhanced, probably because of a futile cycle of fructan synthesis and degradation by invertase, which is induced when sucrose synthase is knocked out. The data do not support a limitation of sink strength by enzyme activities of the starch pathway but point to an energy limitation of storage carbohydrate formation in potato tubers.

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Grain Yield in Pearl Millet in Relation to Source Size and Proximity to Sink

Cited by 7 publications

References 10 publications

Mapping QTLs and association of differentially expressed gene transcripts for multiple agronomic traits under different nitrogen levels in sorghum

Mapping QTLs and association of differentially expressed gene transcripts for multiple agronomic traits under different nitrogen levels in sorghum

Studies on preparation of mixed fruit toffee from Fig and Guava fruits

Evidence against sink limitation by the sucrose‐to‐starch route in potato plants expressing fructosyltransferases

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