The pattern of seed formation in cauliflower (<i>Brassica oleracea</i> L. var. <i>botrytis</i>) with special reference to seed abortion

Gurusamy, C.

doi:10.1139/b99-117

Cited by 4 publications

(9 citation statements)

References 16 publications

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“…Viable seedlings in terms of seedling length and dry weight increased with maturity. Similar results were previously reported in legumes (Ellis et al 1987) and cauliflower (Gurusamy and Thiagarajan 1998).…”

Section: Discussionsupporting

confidence: 91%

“…Accumulation of fresh and dry weights in pod shells and seeds showed a simple sigmoidal pattern. This interrelation between fruit and seed development is similar to those reported in other crops (Dure 1975;Gurusamy and Thiagarajan 1998). The linear pattern of weight accumulation in grass pea seeds is most likely due to delayed termination of reserve accumulation.…”

Section: Hard Seed Coat Development In Beach Peasupporting

confidence: 86%

“…The loss of water during maturation is an inherent phase of development (McIIrath et al 1963). As pointed out by Sreeramulu et al (1992), as well as by Gurusamy and Thiagarajan (1998), a decrease in moisture content of pod shells and seeds, as maturity advanced, is probably due to the utilization of water in various metabolic activities and removal of water by desiccation caused by surrounding environment. Previous research shows that the reduction of pod and seed weights after physiological maturity might be due to oxidation and volatilization (Harrington 1972), desiccation (Kermode 1990), and loss of nutrients (Sreeramulu et al 1992).…”

Section: Discussionmentioning

confidence: 83%

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The pattern of seed development and maturation in beach pea (Lathyrus maritimus)

Chinnasamy¹,

Bal²

2003

Can. J. Bot.

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The developmental patterns of seed, seed coat, and hardseededness were studied in naturally growing crop plants of beach pea (Lathyrus maritimus (L.) Bigel.) at six reproductive growth stages (S1-S6). Grass pea (Lathyrus sativus L.) seeds were used for comparison in some experiments. The accumulation of fresh and dry weight in pod shell and seed of beach pea and pod shell of grass pea followed an almost sigmoidal pattern. However, grass pea seed showed a linear pattern of weight accumulation. During maturation, moisture content of pod shells and seeds decreased because of dehydration. Beach pea seeds were able to germinate precociously at S4. Seeds collected between S1 and S3 failed to germinate because of immaturity, whereas the development of hard seed coats prevented germination in seeds gathered at S5 and S6. An imbibition test revealed that hardseededness completely prevented water absorption of S5 and S6 seeds even after 24 days of soaking. In grass pea, precocious seed germination was observed at S3. However, speed of germination, germination percentage, seedling length and dry weight increased as seeds approached maturity. Lipid and protein accumulation in seeds of both species increased progressively with maturity and showed a positive correlation with seed weight accumulation. In both beach pea and grass pea seeds, S6 was identified as a physiological maturity stage.Résumé : Les auteurs ont étudié les patrons de développement de la graine, des téguments et de l'endurcissement chez la gesse maritime (Lathyrus maritimus (L.) Bigel), une culture poussant naturellement, à six stades de sa reproduction (S1-S6). Les graines de la gesse comestible (Lathryus sativus L.) ont été utilisées pour fin de comparaison dans certaines expériences. L'accumulation du poids frais et du poids sec dans les gousses de la gesse maritime et les gousses de la gesse comestible suivent presque le même patron sigmoïde. Cependant, la graine de la gesse maritime montre un patron linéaire d'accumulation du poids. Au cours de la maturation, la teneur en humidité des gousses et des graines diminue suite à la déshydratation. Les graines de la gesse maritime sont capables de germer de façon précoce au stade S4. Les graines récoltées aux stades S1 à S3 ne peuvent germer parce qu'immatures, alors que l'endurcissement des téguments des graines récoltées aux stades S5 et S6 prévient la germination.. Un test d'imbibition révèle que l'endurcissement empêche complètement l'absorption de l'eau aux stades S5 et S6, même après 24 jours d'immersion. Chez la gesse comestible, on observe une germination précoce des graines au stade S3. Cependant, la vitesse de germination, le pourcentage de germination et la longueur des plantules ainsi que le poids sec augmentent à mesure que la maturité approche. L'accumulation de lipides et de protéines dans les graines des deux espèces augmentent progressivement avec la maturité et montrent une corrélation positive avec l'accumulation de poids par la graine. Chez les graines de la gesse maritime, aussi bien que ch...

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Section: Discussionsupporting

confidence: 91%

Section: Hard Seed Coat Development In Beach Peasupporting

confidence: 86%

Section: Discussionmentioning

confidence: 83%

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The pattern of seed development and maturation in beach pea (Lathyrus maritimus)

Chinnasamy¹,

Bal²

2003

Can. J. Bot.

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“…The dehydration is an inherent phase of seed development (McIlrath et al, 1963), a sign of maximum maturity and onset of a quiescent state. The three major periods outlined by distinctive changes in fresh and dry weight and water content in L. fendleri seed development are similar to other plants such as castor (Chen et al, 2004;Greenwood and Bewley, 1982), Arabidopsis (Baud et al, 2002), Brassica oleracea (Demir and Balkaya, 2005;Gurusamy and Thiagarajan, 1998), and Brassica napus (Norton and Harris, 1975).…”

Section: Discussionmentioning

confidence: 52%

“…As shown in Figure 5, seed did not germinate until 35 DAP. The failure of germination during early development may be the result of the lack of sufficient nutrients (Gurusamy and Thiagarajan, 1998). The germination percentage increased quickly from 47% at 35 DAP to a high of 95% at 42 DAP after 7 d of incubation.…”

Section: Discussionmentioning

confidence: 99%

Seed Development in Lesquerella fendleri (L.)

Chen¹,

Vang²,

Lin³

2009

horts

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The morphological, physiological, and biochemical changes during seed development of Lesquerella fendleri were investigated from 7 days after pollination (DAP) to desiccation. The entire course of seed development lasted ≈49 days and it can be divided into seven sequential stages (I to VII). During the early stages (I to III, 7 to 21 DAP), seed grew rapidly, showing a dramatic increase in size and fresh weight. They contained ≈75% water. During midmaturation stages (IV to V, 28 to 35 DAP), storage lipids, proteins, and other components of dry weights accumulated at maximum rates. The accumulation curves followed a sigmoidal pattern during seed development. As a result of water loss, fresh weight dropped significantly when seed progressed to late-maturation/desiccation stages (VI to VII, 42 to 49 DAP). The size of the seed decreased slightly and the color changed from green to orange–brown. Seed proteins were also analyzed using SDS-PAGE. Proteins with high molecular weights were prominent in developing seed at early stages (I to III). At Stage IV (28 DAP), proteins with low molecular weight appeared, whereas the high-molecular-weight proteins decreased in proportion. These low-molecular-weight proteins became predominant throughout the remaining stages of seed development. Forty-seven percent of freshly harvested seed at 35 DAP were able to germinate after 7 days incubation. The germination percentage increased to a maximum of 95% at 42 DAP after 7 days incubation. The relationships among seed morphology, reserve synthesis, and germination are discussed.

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An analysis of the development of cauliflower seed as a model to improve the molecular mechanism of abiotic stress tolerance in cauliflower artificial seeds

Rihan

Al-Issawi

Fuller

2017

Plant Physiology and Biochemistry

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The development stages of conventional cauliflower seeds were studied and the accumulation of dehydrin proteins through the maturation stages was investigated with the aim of identifying methods to improve the viability of artificial seeds of cauliflower. While carbohydrate, ash and lipids increased throughout the development of cauliflower traditional seeds, proteins increased with the development of seed and reached the maximum level after 75 days of pollination, however, the level of protein started to decrease after that. A significant increase in the accumulation of small size dehydrin proteins (12, 17, 26 KDa) was observed during the development of cauliflower seeds. Several experiments were conducted in order to increase the accumulation of important dehydrin proteins in cauliflower microshoots (artificial seeds). Mannitol and ABA (Absisic acid) increased the accumulation of dehydrins in cauliflower microshoots while cold acclimation did not have a significant impact on the accumulation of these proteins. Molybdenum treatments had a negative impact on dehydrin accumulation. Dehydrins have an important role in the drought tolerance of seeds and, therefore, the current research helps to improve the accumulation of these proteins in cauliflower artificial seeds. This in turns improves the quality of these artificial seeds. The current results suggest that dehydrins do not play an important role in cold tolerance of cauliflower artificial seeds. This study could have an important role in improving the understanding of the molecular mechanism of abiotic stress tolerance in plants.

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The pattern of seed formation in cauliflower (Brassica oleracea L. var. botrytis) with special reference to seed abortion

Cited by 4 publications

References 16 publications

The pattern of seed development and maturation in beach pea (Lathyrus maritimus)

The pattern of seed development and maturation in beach pea (Lathyrus maritimus)

Seed Development in Lesquerella fendleri (L.)

An analysis of the development of cauliflower seed as a model to improve the molecular mechanism of abiotic stress tolerance in cauliflower artificial seeds

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