A physiological analysis of the growth of oilseed rape

Allen, E. J.; Morgan, D. G.; Ridgman, W. J.

doi:10.1017/s0021859600024515

Cited by 71 publications

(31 citation statements)

References 3 publications

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“…2). This upswing was observed in soybean by Buttery (1969) and Koller et al (1970) (Allen et al 1972) and/or from the senescing leaves and stems (Major et al 1978 …”

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confidence: 54%

Effect of Altering Plant Density on Growth Characteristics of Summer Rape

Morrison¹,

McVetty²,

Scarth³

1990

Can. J. Plant Sci.

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summer rape grown at seeding rates of 1.5 and 3.0 kg ha '. This was primarily due to increased plant density. After flowering there were no differences for W, LAI and LAD attributable to differences in seeding rates. Summer rape glown at seeding rates of 6.0 and 12.0 kg ha ' had a lower CGR and NAR during flowering than that grown at 1.5 and 3.0 kg ha I seeding rates indicating rhat plants produced from lower seeding rates were more photosynthetically efficient than plants produced from higher seeding rates.

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“…2). This upswing was observed in soybean by Buttery (1969) and Koller et al (1970) (Allen et al 1972) and/or from the senescing leaves and stems (Major et al 1978 …”

mentioning

confidence: 54%

Effect of Altering Plant Density on Growth Characteristics of Summer Rape

Morrison¹,

McVetty²,

Scarth³

1990

Can. J. Plant Sci.

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“…Over 95% of the assimilates stored in the seeds are produced by the silique (Allen et al 1971). Both the inside and outside surfaces of the silique photosynthesize, and CO 2 recycling occurs in Fig.…”

Section: Discussionmentioning

confidence: 99%

Gravity independence of seed-to-seed cycling in Brassica rapa

Musgrave

Kuang

Xiao

et al. 2000

Planta

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Growth of higher plants in the microgravity environment of orbital platforms has been problematic. Plants typically developed more slowly in space and often failed at the reproductive phase. Short-duration experiments on the Space Shuttle showed that early stages in the reproductive process could occur normally in microgravity, so we sought a long-duration opportunity to test gravity's role throughout the complete life cycle. During a 122-d opportunity on the Mir space station, full life cycles were completed in microgravity with Brassica rapa L. in a series of three experiments in the Svet greenhouse. Plant material was preserved in space by chemical fixation, freezing, and drying, and then compared to material preserved in the same way during a high-fidelity ground control. At sampling times 13 d after planting, plants on Mir were the same size and had the same number of flower buds as ground control plants. Following hand-pollination of the flowers by the astronaut, siliques formed. In microgravity, siliques ripened basipetally and contained smaller seeds with less than 20% of the cotyledon cells found in the seeds harvested from the ground control. Cytochemical localization of storage reserves in the mature embryos showed that starch was retained in the spaceflight material, whereas protein and lipid were the primary storage reserves in the ground control seeds. While these successful seed-to-seed cycles show that gravity is not absolutely required for any step in the plant life cycle, seed quality in Brassica is compromised by development in microgravity.

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“…Siliques serve to encapsulate the developing seeds and protect them from biotic and abiotic stresses (Bennett et al 2011). It has been proven that silique is not only an important source organ which provides photosynthates to the developing seeds contained therein (Allen et al 1971), but also an important sink organ which intakes the carbohydrates synthesized in the vegetative parts of the plant such as leaves and stem (Schiltz et al 2005). Physiological analyses indicated that approximately 30% of dry matter of siliques and seeds contained in siliques being attributed to assimilates produced by siliques (Brar and Thies 1977;Samizadeh et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Identification of a major QTL for silique length and seed weight in oilseed rape (Brassica napus L.)

et al. 2012

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Silique length (SL) and seed weight (SW) are two important yield-related traits controlled by quantitative trait loci (QTL) in oilseed rape (Brassica napus L.). The genetic bases underlying these two traits are largely unknown at present. In this study, we conducted QTL analyses for SL and SW using 186 recombinant inbred lines (RILs) derived from a cross between S1, an EMS mutant with extremely long siliques and large seeds, and S2, an inbred line with regular silique length and seed size. RILs were grown in Wuhan in the 2008/09 (SS09) and 2009/10 (SS10) growing seasons, and mean SL and SW for each line were investigated. Ten non-redundant QTL were identified for SL. Of these, a major QTL, cqSLA9, consistently explained as much as 53.4% of SL variation across environments. The others are minor QTL and individually explained less than 10% of the SL variation. Nine non-redundant QTL were identified for SW. Of which, one major QTL, cqSWA9, explained as much as 28.2% of the total SW variation in the SS09 and SS10 environments. In addition, three additive by additive interactions with small effects were detected for SL, and no interactions were detected for SW. Interestingly, the two major QTL, cqSLA9 for SL and cqSWA9 for SW colocalized in the same chromosomal region and were integrated into a unique QTL, uqA9. The S1 allele at this locus increases both SL and SW, suggesting that uqA9 has pleiotropic effects on both SL and SW. The existence and effect of uqA9 was confirmed in genetically different RILs derived from the cross between S1 and No2127, a resynthesized DH line having regular silique length and seed size. Individuals in one residual heterozygous line for cqSLA9 showed significant difference in silique length. The results in this study revealed that silique length in the S1 mutant is mainly controlled by the cqSLA9 locus, which will be suitable for fine mapping and marker-assisted selection in rapeseed breeding for high yield.

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A physiological analysis of the growth of oilseed rape

Cited by 71 publications

References 3 publications

Effect of Altering Plant Density on Growth Characteristics of Summer Rape

Effect of Altering Plant Density on Growth Characteristics of Summer Rape

Gravity independence of seed-to-seed cycling in Brassica rapa

Identification of a major QTL for silique length and seed weight in oilseed rape (Brassica napus L.)

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