The relationship between reproductive growth and blank fruit formation in Corylus heterophylla Fisch

Liu, Jianfeng; Cheng, Yufei; Ke, Yan; Liu, Qiang; Wang, Zhanwu

doi:10.1016/j.scienta.2012.01.008

Cited by 23 publications

(17 citation statements)

References 21 publications

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“…As one of the four internationally famous nuts, wild hazelnut is a nut resource that is widely distributed in the Changbai Mountain, Jilin Province, China. The most well‐known species of wild hazelnuts in the Changbai Mountain are C. heterophylla Fisch and C. mandshurica Maxim, especially the former . Both species are nutritious and rich in protein (20–30%), fat (40–50%), carbohydrates (13–24%), dietary fibre (8.2–9.6%), vitamins, and microelements.…”

Section: Introductionmentioning

confidence: 99%

In vivo assessment of immunomodulatory activity of hydrolysed peptides from Corylus heterophylla Fisch

et al. 2015

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Section: Introductionmentioning

confidence: 99%

In vivo assessment of immunomodulatory activity of hydrolysed peptides from Corylus heterophylla Fisch

et al. 2015

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“…We evaluated the fruit set and the fruit and seed characteristics among the different pollination treatments when chestnut were harvested in early September. The fruit set was calculated according to Liu et al (2012). Fruit and seed characteristics, including the mean single fruit weight, seed length, and width, also were examined (P erez and L opez, 2009).…”

Section: Methodsmentioning

confidence: 99%

Self-sterility May Be Due to Prezygotic Late-acting Self-incompatibility and Early-acting Inbreeding Depression in Chinese Chestnut

Xiong¹,

Feng²,

Guo³

et al. 2019

J. Amer. Soc. Hort. Sci.

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Chinese chestnut (Castanea mollissima), which is native to China, has been cultivated as a nontimber forest tree species for 4000 years. This species has been found to display self-sterility, which results in a significantly lower seed set following self-pollination (SP) compared with that following cross-pollination (CP). Self-sterility can be induced by prezygotic or postzygotic late-acting self-incompatibility (LSI) or early-acting inbreeding depression (EID). To elucidate the causes of self-sterility in chestnut, we investigated pollen–pistil interactions, fertilization, and early ovule development following SP and CP by using a paraffin section technique and fluorescence microscopy. The fruit set percentage and seed characteristics also were evaluated among different pollination treatments. The results show that there were no significant differences in pollen tube behavior following SP vs. CP, regardless of the stigmatic or stylar level. Double fertilization was significantly greater following CP (18.09%) than SP (2.58%). The significantly lower percentages of ovule penetration and double fertilization in the selfed vs. crossed ovules support a prezygotic LSI mechanism in C. mollissima. The fruit set resulting from chase-pollination (CHP; 53.85% to 63.64%) was greater than that resulting from SP (12.12% to 14.00%). In addition, the distribution of aborted seed sizes after SP showed a widely clumped pattern. Abortion occurred at different stages during seed development rather than at a uniform stage, which supported the idea that EID was operating in C. mollissima. Levels of self-sterility in the chinese chestnut trees ranged from 88.2% to 90.5%. Thus, partial prezygotic LSI and EID contributed to self-sterility in the C. mollissima ‘Yanshanzaofeng’, with prezygotic LSI rejecting part of the self-pollen in the ovary and EID aborting part of the self-fertilized seeds.

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“…On April 1st of both years, pollen was collected from the hazel orchards and air-dried using the method described by Liu et al ( 2012 ). After mixing equal amounts of pollen from each individual and pollen germination test on stigma of cultivar Dawei, artificial pollination was carried out in the peak flowering period (mid-April).…”

Section: Methodsmentioning

confidence: 99%

“…According to our previous histological examination, fertilization is completed about 60 days after blooming in hazel (Liu et al, 2012 ). In order to examine the relationship between pollen tube growth and ovary abortion, young pistillate inflorescences or fruit clusters of the hybrid hazel cultivar “Dawei” were collected to observe pollen tube growth and the anatomical structure of the ovary from 1 to 60 days after blooming.…”

Section: Methodsmentioning

confidence: 99%

“…The northeast is the traditional hazelnut production region in China. Development of the hazelnut industry plays an important role in increasing farmers' income, especially in mountainous areas (Liu et al, 2012 ). Compared with yields of 600–1000 kg ha −1 in Turkey, 2000–3000 kg ha −1 in Italy and 1700–2500 kg ha −1 in the United States (Aydinoglu, 2013 ), yields in China are less than 450 kg ha −1 .…”

Section: Introductionmentioning

confidence: 99%

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Comparison of ultrastructure, pollen tube growth pattern and starch content in developing and abortive ovaries during the progamic phase in hazel

et al. 2014

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HIGHLIGHTS In an abortive ovary of hazel, an integument seldom differentiated and a mature embryo sac never developed.In an abortive ovary of hazel, pollen tube growth was arrested at the style base about 40 days after blooming. Thus, fertilization of the ovule was precluded.Ovary abortion in the four hybrid cultivars was indicated to be associated with insufficient resource availability to support fruit set by all flowers, whereas ovary abortion in C. heterophylla was at least partly determined by pollen availability.In Northeast China, a high frequency of ovary abortion contributes to serious losses in yield of hazelnut. The development of pistillate inflorescences and fruit clusters of four large-fruited hybrid hazel cultivars and the small-fruited Corylus heterophylla were used to study ovary abortion and its possible causes during the progamic phase in hazel. The average number of pistillate (ANP) flowers per inflorescence and average number of fruit (ANF) per cluster of four hybrid hazel cultivars were 7.6–8.5 and 2.4–3.0 respectively; in C. heterophylla, its ANP and ANF was 5.8–6.2 and 3.5, respectively. The total drop varied from 50 to 67%. Ovary abortion in hazel initiated from about 30 days after blooming. The percentage of abortive ovaries (PAO) in the four hybrid hazel cultivars ranged from 63 to 72%, and was significantly higher than that of C. heterophylla (29–42%). Only the abortive ovary ratio of C. heterophylla was significantly reduced after artificial pollination. Fruit number per cluster was positively and negatively correlated with yield and nut mass, respectively. In abortive ovaries, the diameter remained less than 2 mm during the entire fruit development, an integument seldom differentiated and a mature embryo sac never developed. In addition, pollen tube growth was arrested at the style base about 40 days after blooming. Thus, fertilization of the ovule was precluded. Compared with abortive ovary, starch content in developing ovary of four hybrid hazel cultivars and C. heterophylla were significantly higher. This study suggests that abortive ovary was incapable to finish fertilization process due to the absence of mature embryo sac and arrested pollen tubes, and this is likely associate with insufficient resource availability to support fruit set by all flowers in four hybrid hazel cultivars, whereas ovary abortion in C. heterophylla is at least partly determined by pollen availability.

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The relationship between reproductive growth and blank fruit formation in Corylus heterophylla Fisch

Cited by 23 publications

References 21 publications

In vivo assessment of immunomodulatory activity of hydrolysed peptides from Corylus heterophylla Fisch

In vivo assessment of immunomodulatory activity of hydrolysed peptides from Corylus heterophylla Fisch

Self-sterility May Be Due to Prezygotic Late-acting Self-incompatibility and Early-acting Inbreeding Depression in Chinese Chestnut

Comparison of ultrastructure, pollen tube growth pattern and starch content in developing and abortive ovaries during the progamic phase in hazel

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